From ba67025db56d05881149f0d7556ffb5989a0cbce Mon Sep 17 00:00:00 2001
From: Georgii Surkov <37121527+gsurkov@users.noreply.github.com>
Date: Thu, 8 Dec 2022 15:31:11 +0300
Subject: [PATCH] Property API (#139)

* Update protobuf definitions

* Add property messages to flipperproto0 and interface

* Add ProtobufVersion messages to flipperproto0 and interface

* Add ProtobufVersionOperation to backend rpc

* Add ProtobufVersion to MainResponse

* Improve protobuf version checking, make it unsigned

* Add device info via new PropertyGet API
---
 backend/backend.pro                           |  4 +
 backend/flipperzero/deviceinfo.h              |  4 +-
 .../flipperzero/helper/deviceinfohelper.cpp   | 94 ++++++++++++++++++-
 backend/flipperzero/helper/deviceinfohelper.h |  4 +
 backend/flipperzero/protobufsession.cpp       | 21 ++++-
 backend/flipperzero/protobufsession.h         | 15 ++-
 .../flipperzero/rpc/propertygetoperation.cpp  | 40 ++++++++
 .../flipperzero/rpc/propertygetoperation.h    | 31 ++++++
 .../rpc/systemprotobufversionoperation.cpp    | 45 +++++++++
 .../rpc/systemprotobufversionoperation.h      | 32 +++++++
 plugins/flipperproto0/flipperproto0.pro       |  6 ++
 plugins/flipperproto0/mainresponse.cpp        |  6 ++
 .../flipperproto0/messages/application.pb.c   |  9 ++
 .../flipperproto0/messages/application.pb.h   | 47 ++++++++++
 plugins/flipperproto0/messages/flipper.pb.h   | 37 +++++++-
 plugins/flipperproto0/messages/property.pb.c  | 15 +++
 plugins/flipperproto0/messages/property.pb.h  | 65 +++++++++++++
 plugins/flipperproto0/messages/storage.pb.c   |  6 ++
 plugins/flipperproto0/messages/storage.pb.h   | 30 ++++++
 plugins/flipperproto0/propertyrequest.cpp     |  9 ++
 plugins/flipperproto0/propertyrequest.h       | 12 +++
 plugins/flipperproto0/propertyresponse.cpp    | 15 +++
 plugins/flipperproto0/propertyresponse.h      | 16 ++++
 plugins/flipperproto0/protobufplugin.cpp      | 15 ++-
 plugins/flipperproto0/protobufplugin.h        |  9 +-
 plugins/flipperproto0/systemrequest.cpp       |  4 +
 plugins/flipperproto0/systemrequest.h         |  6 ++
 plugins/flipperproto0/systemresponse.cpp      | 14 +++
 plugins/flipperproto0/systemresponse.h        | 11 +++
 .../protobufinterface/mainresponseinterface.h |  3 +
 .../propertyresponseinterface.h               | 15 +++
 .../protobufinterface/protobufinterface.pro   |  1 +
 .../protobufplugininterface.h                 |  7 +-
 .../systemresponseinterface.h                 |  8 ++
 34 files changed, 629 insertions(+), 27 deletions(-)
 create mode 100644 backend/flipperzero/rpc/propertygetoperation.cpp
 create mode 100644 backend/flipperzero/rpc/propertygetoperation.h
 create mode 100644 backend/flipperzero/rpc/systemprotobufversionoperation.cpp
 create mode 100644 backend/flipperzero/rpc/systemprotobufversionoperation.h
 create mode 100644 plugins/flipperproto0/messages/property.pb.c
 create mode 100644 plugins/flipperproto0/messages/property.pb.h
 create mode 100644 plugins/flipperproto0/propertyrequest.cpp
 create mode 100644 plugins/flipperproto0/propertyrequest.h
 create mode 100644 plugins/flipperproto0/propertyresponse.cpp
 create mode 100644 plugins/flipperproto0/propertyresponse.h
 create mode 100644 plugins/protobufinterface/propertyresponseinterface.h

diff --git a/backend/backend.pro b/backend/backend.pro
index 9b19a181..53d31afd 100644
--- a/backend/backend.pro
+++ b/backend/backend.pro
@@ -30,6 +30,7 @@ SOURCES += \
     flipperzero/rpc/guistartvirtualdisplayoperation.cpp \
     flipperzero/rpc/guistopscreenstreamoperation.cpp \
     flipperzero/rpc/guistopvirtualdisplayoperation.cpp \
+    flipperzero/rpc/propertygetoperation.cpp \
     flipperzero/rpc/startrpcoperation.cpp \
     flipperzero/rpc/stoprpcoperation.cpp \
     flipperzero/rpc/storageinfooperation.cpp \
@@ -43,6 +44,7 @@ SOURCES += \
     flipperzero/rpc/systemdeviceinfooperation.cpp \
     flipperzero/rpc/systemfactoryresetoperation.cpp \
     flipperzero/rpc/systemgetdatetimeoperation.cpp \
+    flipperzero/rpc/systemprotobufversionoperation.cpp \
     flipperzero/rpc/systemrebootoperation.cpp \
     flipperzero/rpc/systemsetdatetimeoperation.cpp \
     flipperzero/rpc/skipmotdoperation.cpp \
@@ -138,6 +140,7 @@ HEADERS += \
     flipperzero/rpc/guistartvirtualdisplayoperation.h \
     flipperzero/rpc/guistopscreenstreamoperation.h \
     flipperzero/rpc/guistopvirtualdisplayoperation.h \
+    flipperzero/rpc/propertygetoperation.h \
     flipperzero/rpc/startrpcoperation.h \
     flipperzero/rpc/stoprpcoperation.h \
     flipperzero/rpc/storageinfooperation.h \
@@ -151,6 +154,7 @@ HEADERS += \
     flipperzero/rpc/systemdeviceinfooperation.h \
     flipperzero/rpc/systemfactoryresetoperation.h \
     flipperzero/rpc/systemgetdatetimeoperation.h \
+    flipperzero/rpc/systemprotobufversionoperation.h \
     flipperzero/rpc/systemrebootoperation.h \
     flipperzero/rpc/systemsetdatetimeoperation.h \
     flipperzero/rpc/skipmotdoperation.h \
diff --git a/backend/flipperzero/deviceinfo.h b/backend/flipperzero/deviceinfo.h
index ab74bb8f..deaa18b1 100644
--- a/backend/flipperzero/deviceinfo.h
+++ b/backend/flipperzero/deviceinfo.h
@@ -71,8 +71,8 @@ struct StorageInfo {
 
 struct ProtobufInfo {
 public:
-    int versionMajor;
-    int versionMinor;
+    uint32_t versionMajor;
+    uint32_t versionMinor;
 };
 
 struct DeviceInfo {
diff --git a/backend/flipperzero/helper/deviceinfohelper.cpp b/backend/flipperzero/helper/deviceinfohelper.cpp
index 58931594..d16011bc 100644
--- a/backend/flipperzero/helper/deviceinfohelper.cpp
+++ b/backend/flipperzero/helper/deviceinfohelper.cpp
@@ -14,9 +14,11 @@
 #include "flipperzero/rpc/stoprpcoperation.h"
 #include "flipperzero/rpc/storageinfooperation.h"
 #include "flipperzero/rpc/storagestatoperation.h"
+#include "flipperzero/rpc/propertygetoperation.h"
 #include "flipperzero/rpc/systemdeviceinfooperation.h"
 #include "flipperzero/rpc/systemgetdatetimeoperation.h"
 #include "flipperzero/rpc/systemsetdatetimeoperation.h"
+#include "flipperzero/rpc/systemprotobufversionoperation.h"
 
 #include "device/stm32wb55.h"
 #include "serialfinder.h"
@@ -70,6 +72,10 @@ void VCPDeviceInfoHelper::nextStateLogic()
         startRPCSession();
 
     } else if(state() == VCPDeviceInfoHelper::StartingRPCSession) {
+        setState(VCPDeviceInfoHelper::FetchingProtobufVersion);
+        fetchProtobufVersion();
+
+    } else if(state() == VCPDeviceInfoHelper::FetchingProtobufVersion) {
         setState(VCPDeviceInfoHelper::FetchingDeviceInfo);
         fetchDeviceInfo();
 
@@ -120,7 +126,39 @@ void VCPDeviceInfoHelper::startRPCSession()
     m_rpc->startSession();
 }
 
+void VCPDeviceInfoHelper::fetchProtobufVersion()
+{
+    auto *operation = m_rpc->systemProtobufVersion();
+
+    connect(operation, &AbstractOperation::finished, this, [=]() {
+        if(operation->isError()) {
+            finishWithError(BackendError::InvalidDevice, QStringLiteral("Failed to get protobuf version: %1").arg(operation->errorString()));
+            return;
+        }
+
+        m_deviceInfo.protobuf = {
+            operation->versionMajor(),
+            operation->versionMinor()
+        };
+
+        qCDebug(CATEGORY_DEBUG).noquote() << QStringLiteral("Detected protobuf version: %1.%2").arg(operation->versionMajor()).arg(operation->versionMinor());
+
+        advanceState();
+    });
+}
+
 void VCPDeviceInfoHelper::fetchDeviceInfo()
+{
+    const auto &protobuf = m_deviceInfo.protobuf;
+
+    if((protobuf.versionMajor > 0) || (protobuf.versionMinor >= 14)) {
+        fetchDeviceInfoProperty();
+    } else {
+        fetchDeviceInfoLegacy();
+    }
+}
+
+void VCPDeviceInfoHelper::fetchDeviceInfoLegacy()
 {
     auto *operation = m_rpc->systemDeviceInfo();
 
@@ -149,11 +187,6 @@ void VCPDeviceInfoHelper::fetchDeviceInfo()
             (Region)operation->value(QByteArrayLiteral("hardware_region")).toInt(),
         };
 
-        m_deviceInfo.protobuf = {
-            operation->value(QByteArrayLiteral("protobuf_version_major")).toInt(),
-            operation->value(QByteArrayLiteral("protobuf_version_minor")).toInt()
-        };
-
         if(operation->value(QByteArrayLiteral("radio_alive")) == QByteArrayLiteral("true")) {
             m_deviceInfo.fusVersion = QStringLiteral("%1.%2.%3").arg(
                 operation->value(QByteArrayLiteral("radio_fus_major")),
@@ -176,6 +209,57 @@ void VCPDeviceInfoHelper::fetchDeviceInfo()
     });
 }
 
+void VCPDeviceInfoHelper::fetchDeviceInfoProperty()
+{
+    auto *operation = m_rpc->propertyGet(QByteArrayLiteral("devinfo"));
+
+    connect(operation, &AbstractOperation::finished, this, [=]() {
+        if(operation->isError()) {
+            finishWithError(BackendError::InvalidDevice, QStringLiteral("Failed to get device information: %1").arg(operation->errorString()));
+            return;
+        }
+
+        m_deviceInfo.name = operation->value(QByteArrayLiteral("hardware.name"));
+
+        m_deviceInfo.firmware = {
+            operation->value(QByteArrayLiteral("firmware.version")),
+            operation->value(QByteArrayLiteral("firmware.commit.hash")),
+            operation->value(QByteArrayLiteral("firmware.branch.name")),
+            branchToChannelName(operation->value(QByteArrayLiteral("firmware.branch.name"))),
+            QDateTime::fromString(operation->value(QByteArrayLiteral("firmware.build.date")), "dd-MM-yyyy").date()
+        };
+
+        m_deviceInfo.hardware = {
+            operation->value(QByteArrayLiteral("hardware.ver")),
+            QByteArrayLiteral("f") + operation->value(QByteArrayLiteral("hardware.target")),
+            QByteArrayLiteral("b") + operation->value(QByteArrayLiteral("hardware.body")),
+            QByteArrayLiteral("c") + operation->value(QByteArrayLiteral("hardware.connect")),
+            (Color)operation->value(QByteArrayLiteral("hardware.color")).toInt(),
+            (Region)operation->value(QByteArrayLiteral("hardware.region.builtin")).toInt(),
+        };
+
+        if(operation->value(QByteArrayLiteral("radio.alive")) == QByteArrayLiteral("true")) {
+            m_deviceInfo.fusVersion = QStringLiteral("%1.%2.%3").arg(
+                operation->value(QByteArrayLiteral("radio.fus.major")),
+                operation->value(QByteArrayLiteral("radio.fus.minor")),
+                operation->value(QByteArrayLiteral("radio.fus.sub")));
+
+            m_deviceInfo.radioVersion = QStringLiteral("%1.%2.%3").arg(
+                operation->value(QByteArrayLiteral("radio.stack.major")),
+                operation->value(QByteArrayLiteral("radio.stack.minor")),
+                operation->value(QByteArrayLiteral("radio.stack.sub")));
+
+            m_deviceInfo.stackType = operation->value(QByteArrayLiteral("radio.stack.type")).toInt();
+        }
+
+        if(m_deviceInfo.name.isEmpty()) {
+            finishWithError(BackendError::InvalidDevice, QStringLiteral("Failed to read device information: required fields are not present"));
+        } else {
+            advanceState();
+        }
+    });
+}
+
 void VCPDeviceInfoHelper::checkSDCard()
 {
     auto *operation = m_rpc->storageInfo(QByteArrayLiteral("/ext"));
diff --git a/backend/flipperzero/helper/deviceinfohelper.h b/backend/flipperzero/helper/deviceinfohelper.h
index 02308601..223f00dd 100644
--- a/backend/flipperzero/helper/deviceinfohelper.h
+++ b/backend/flipperzero/helper/deviceinfohelper.h
@@ -36,6 +36,7 @@ class VCPDeviceInfoHelper : public AbstractDeviceInfoHelper
     enum OperationState {
         FindingSerialPort = AbstractOperationHelper::User,
         StartingRPCSession,
+        FetchingProtobufVersion,
         FetchingDeviceInfo,
         CheckingSDCard,
         CheckingManifest,
@@ -52,7 +53,10 @@ class VCPDeviceInfoHelper : public AbstractDeviceInfoHelper
 
     void findSerialPort();
     void startRPCSession();
+    void fetchProtobufVersion();
     void fetchDeviceInfo();
+    void fetchDeviceInfoLegacy();
+    void fetchDeviceInfoProperty();
     void checkSDCard();
     void checkManifest();
     void getTimeSkew();
diff --git a/backend/flipperzero/protobufsession.cpp b/backend/flipperzero/protobufsession.cpp
index a6c29dfd..54f64a69 100644
--- a/backend/flipperzero/protobufsession.cpp
+++ b/backend/flipperzero/protobufsession.cpp
@@ -28,6 +28,7 @@
 #include "rpc/systemsetdatetimeoperation.h"
 #include "rpc/systemfactoryresetoperation.h"
 #include "rpc/systemupdateoperation.h"
+#include "rpc/systemprotobufversionoperation.h"
 
 #include "rpc/guisendinputoperation.h"
 #include "rpc/guiscreenframeoperation.h"
@@ -36,6 +37,8 @@
 #include "rpc/guistartvirtualdisplayoperation.h"
 #include "rpc/guistopvirtualdisplayoperation.h"
 
+#include "rpc/propertygetoperation.h"
+
 #if defined(QT_STATIC)
 Q_IMPORT_PLUGIN(ProtobufPlugin)
 #endif
@@ -135,6 +138,11 @@ SystemUpdateOperation *ProtobufSession::systemUpdate(const QByteArray &manifestP
     return enqueueOperation(new SystemUpdateOperation(getAndIncrementCounter(), manifestPath, this));
 }
 
+SystemProtobufVersionOperation *ProtobufSession::systemProtobufVersion()
+{
+    return enqueueOperation(new SystemProtobufVersionOperation(getAndIncrementCounter(), this));
+}
+
 StorageListOperation *ProtobufSession::storageList(const QByteArray &path)
 {
     return enqueueOperation(new StorageListOperation(getAndIncrementCounter(), path, this));
@@ -205,6 +213,11 @@ GuiScreenFrameOperation *ProtobufSession::guiSendScreenFrame(const QByteArray &s
     return enqueueOperation(new GuiScreenFrameOperation(getAndIncrementCounter(), screenData, this));
 }
 
+PropertyGetOperation *ProtobufSession::propertyGet(const QByteArray &key)
+{
+    return enqueueOperation(new PropertyGetOperation(getAndIncrementCounter(), key, this));
+}
+
 void ProtobufSession::startSession()
 {
     if(m_sessionState != Stopped) {
@@ -420,7 +433,7 @@ void ProtobufSession::setSessionState(SessionState newState)
 }
 
 #if !defined(QT_STATIC)
-const QString ProtobufSession::protobufPluginFileName(int versionMajor)
+const QString ProtobufSession::protobufPluginFileName(uint32_t versionMajor)
 {
 #if defined(Q_OS_WINDOWS)
     return QStringLiteral("flipperproto%1.dll").arg(versionMajor);
@@ -434,9 +447,9 @@ const QString ProtobufSession::protobufPluginFileName(int versionMajor)
 }
 #endif
 
-QVector<int> ProtobufSession::supportedProtobufVersions()
+QVector<uint32_t> ProtobufSession::supportedProtobufVersions()
 {
-    QVector<int> ret;
+    QVector<uint32_t> ret;
 
 #if defined(QT_STATIC)
     const auto staticInstances = QPluginLoader::staticInstances();
@@ -451,7 +464,7 @@ QVector<int> ProtobufSession::supportedProtobufVersions()
 #else
     const auto libraryPaths = QCoreApplication::libraryPaths();
 
-    for(auto i = 0;; ++i) {
+    for(uint32_t i = 0;; ++i) {
         for(const auto &path : libraryPaths) {
             const QDir libraryDir(path);
 
diff --git a/backend/flipperzero/protobufsession.h b/backend/flipperzero/protobufsession.h
index abb1f86a..4a84dfa7 100644
--- a/backend/flipperzero/protobufsession.h
+++ b/backend/flipperzero/protobufsession.h
@@ -21,6 +21,7 @@ class SystemGetDateTimeOperation;
 class SystemSetDateTimeOperation;
 class SystemFactoryResetOperation;
 class SystemUpdateOperation;
+class SystemProtobufVersionOperation;
 
 class StorageListOperation;
 class StorageInfoOperation;
@@ -38,6 +39,8 @@ class GuiSendInputOperation;
 class GuiStartVirtualDisplayOperation;
 class GuiStopVirtualDisplayOperation;
 
+class PropertyGetOperation;
+
 class ProtobufSession : public QObject, public Failable
 {
     Q_OBJECT
@@ -71,6 +74,7 @@ class ProtobufSession : public QObject, public Failable
     SystemFactoryResetOperation *factoryReset();
     SystemDeviceInfoOperation *systemDeviceInfo();
     SystemUpdateOperation *systemUpdate(const QByteArray &manifestPath);
+    SystemProtobufVersionOperation *systemProtobufVersion();
 
     StorageListOperation *storageList(const QByteArray &path);
     StorageInfoOperation *storageInfo(const QByteArray &path);
@@ -88,6 +92,8 @@ class ProtobufSession : public QObject, public Failable
     GuiSendInputOperation *guiSendInput(int key, int type);
     GuiScreenFrameOperation *guiSendScreenFrame(const QByteArray &screenData);
 
+    PropertyGetOperation *propertyGet(const QByteArray &key);
+
 signals:
     void sessionStateChanged();
     void broadcastResponseReceived(QObject *response);
@@ -109,9 +115,9 @@ private slots:
 
 private:
 #if !defined(QT_STATIC)
-    static const QString protobufPluginFileName(int versionMajor);
+    static const QString protobufPluginFileName(uint32_t versionMajor);
 #endif
-    static QVector<int> supportedProtobufVersions();
+    static QVector<uint32_t> supportedProtobufVersions();
 
     void setSessionState(SessionState newState);
 
@@ -147,9 +153,8 @@ private slots:
 
     qint64 m_bytesToWrite;
     uint32_t m_counter;
-
-    int m_versionMajor;
-    int m_versionMinor;
+    uint32_t m_versionMajor;
+    uint32_t m_versionMinor;
 };
 
 }
diff --git a/backend/flipperzero/rpc/propertygetoperation.cpp b/backend/flipperzero/rpc/propertygetoperation.cpp
new file mode 100644
index 00000000..d15c1e04
--- /dev/null
+++ b/backend/flipperzero/rpc/propertygetoperation.cpp
@@ -0,0 +1,40 @@
+#include "propertygetoperation.h"
+
+#include "protobufplugininterface.h"
+#include "mainresponseinterface.h"
+#include "propertyresponseinterface.h"
+
+using namespace Flipper;
+using namespace Zero;
+
+PropertyGetOperation::PropertyGetOperation(uint32_t id, const QByteArray &key, QObject *parent):
+    AbstractProtobufOperation(id, parent),
+    m_key(key)
+{}
+
+const QString PropertyGetOperation::description() const
+{
+    return QStringLiteral("Property Get");
+}
+
+const QByteArray PropertyGetOperation::value(const QByteArray &key) const
+{
+    return m_data.value(key);
+}
+
+const QByteArray PropertyGetOperation::encodeRequest(ProtobufPluginInterface *encoder)
+{
+    return encoder->propertyGet(id(), m_key);
+}
+
+bool PropertyGetOperation::processResponse(QObject *response)
+{
+    const auto *msg = qobject_cast<PropertyGetResponseInterface*>(response);
+
+    if(msg) {
+        m_data.insert(msg->key(), msg->value());
+        return true;
+    }
+
+    return qobject_cast<EmptyResponseInterface*>(response);
+}
diff --git a/backend/flipperzero/rpc/propertygetoperation.h b/backend/flipperzero/rpc/propertygetoperation.h
new file mode 100644
index 00000000..4e510655
--- /dev/null
+++ b/backend/flipperzero/rpc/propertygetoperation.h
@@ -0,0 +1,31 @@
+#pragma once
+
+#include "abstractprotobufoperation.h"
+
+#include <QHash>
+#include <QByteArray>
+
+namespace Flipper {
+namespace Zero {
+
+class PropertyGetOperation : public AbstractProtobufOperation
+{
+    Q_OBJECT
+
+public:
+    PropertyGetOperation(uint32_t id, const QByteArray &key, QObject *parent = nullptr);
+    const QString description() const override;
+    const QByteArray value(const QByteArray &key) const;
+
+    const QByteArray encodeRequest(ProtobufPluginInterface *encoder) override;
+
+private:
+    bool processResponse(QObject *response) override;
+
+    QByteArray m_key;
+    QHash<QByteArray, QByteArray> m_data;
+};
+
+}
+}
+
diff --git a/backend/flipperzero/rpc/systemprotobufversionoperation.cpp b/backend/flipperzero/rpc/systemprotobufversionoperation.cpp
new file mode 100644
index 00000000..32b8b0b2
--- /dev/null
+++ b/backend/flipperzero/rpc/systemprotobufversionoperation.cpp
@@ -0,0 +1,45 @@
+#include "systemprotobufversionoperation.h"
+
+#include "protobufplugininterface.h"
+#include "systemresponseinterface.h"
+
+using namespace Flipper;
+using namespace Zero;
+
+SystemProtobufVersionOperation::SystemProtobufVersionOperation(uint32_t id, QObject *parent):
+    AbstractProtobufOperation(id, parent),
+    m_versionMajor(0),
+    m_versionMinor(0)
+{}
+
+const QString SystemProtobufVersionOperation::description() const
+{
+    return QStringLiteral("System Protobuf Version");
+}
+
+uint32_t SystemProtobufVersionOperation::versionMajor() const
+{
+    return m_versionMajor;
+}
+
+uint32_t SystemProtobufVersionOperation::versionMinor() const
+{
+    return m_versionMinor;
+}
+
+const QByteArray SystemProtobufVersionOperation::encodeRequest(ProtobufPluginInterface *encoder)
+{
+    return encoder->systemProtobufVersion(id());
+}
+
+bool SystemProtobufVersionOperation::processResponse(QObject *response)
+{
+    auto *msg = qobject_cast<SystemProtobufVersionResponseInterface*>(response);
+
+    if(msg) {
+        m_versionMajor = msg->versionMajor();
+        m_versionMinor = msg->versionMinor();
+    }
+
+    return msg;
+}
diff --git a/backend/flipperzero/rpc/systemprotobufversionoperation.h b/backend/flipperzero/rpc/systemprotobufversionoperation.h
new file mode 100644
index 00000000..08588030
--- /dev/null
+++ b/backend/flipperzero/rpc/systemprotobufversionoperation.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "abstractprotobufoperation.h"
+
+#include <QByteArray>
+
+namespace Flipper {
+namespace Zero {
+
+class SystemProtobufVersionOperation : public AbstractProtobufOperation
+{
+    Q_OBJECT
+
+public:
+    SystemProtobufVersionOperation(uint32_t id, QObject *parent = nullptr);
+    const QString description() const override;
+
+    uint32_t versionMajor() const;
+    uint32_t versionMinor() const;
+
+    const QByteArray encodeRequest(ProtobufPluginInterface *encoder) override;
+
+private:
+    bool processResponse(QObject *response) override;
+
+    uint32_t m_versionMajor;
+    uint32_t m_versionMinor;
+};
+
+}
+}
+
diff --git a/plugins/flipperproto0/flipperproto0.pro b/plugins/flipperproto0/flipperproto0.pro
index 1de45121..1e6427cd 100644
--- a/plugins/flipperproto0/flipperproto0.pro
+++ b/plugins/flipperproto0/flipperproto0.pro
@@ -23,10 +23,13 @@ HEADERS += \
     messages/application.pb.h \
     messages/flipper.pb.h \
     messages/gui.pb.h \
+    messages/property.pb.h \
     messages/status.pb.h \
     messages/storage.pb.h \
     messages/system.pb.h \
     messagewrapper.h \
+    propertyrequest.h \
+    propertyresponse.h \
     protobufplugin.h \
     regiondata.h \
     statusrequest.h \
@@ -45,10 +48,13 @@ SOURCES += \
     messages/flipper.pb.c \
     messages/gpio.pb.c \
     messages/gui.pb.c \
+    messages/property.pb.c \
     messages/status.pb.c \
     messages/storage.pb.c \
     messages/system.pb.c \
     messagewrapper.cpp \
+    propertyrequest.cpp \
+    propertyresponse.cpp \
     protobufplugin.cpp \
     regiondata.cpp \
     statusrequest.cpp \
diff --git a/plugins/flipperproto0/mainresponse.cpp b/plugins/flipperproto0/mainresponse.cpp
index 1a3ed261..f080a177 100644
--- a/plugins/flipperproto0/mainresponse.cpp
+++ b/plugins/flipperproto0/mainresponse.cpp
@@ -6,6 +6,7 @@
 #include "statusresponse.h"
 #include "systemresponse.h"
 #include "storageresponse.h"
+#include "propertyresponse.h"
 
 MainResponse::MainResponse(MessageWrapper &wrapper, QObject *parent):
     QObject(parent),
@@ -89,11 +90,13 @@ QObject *MainResponse::create(MessageWrapper &wrapper, QObject *parent)
     case SystemDeviceInfo: return new SystemDeviceInfoResponse(wrapper, parent);
     case SystemGetDateTime: return new SystemGetDateTimeResponse(wrapper, parent);
     case SystemUpdate: return new SystemUpdateResponse(wrapper, parent);
+    case SystemProtobufVersion: return new SystemProtobufVersionResponse(wrapper, parent);
     case StorageInfo: return new StorageInfoResponse(wrapper, parent);
     case StorageStat: return new StorageStatResponse(wrapper, parent);
     case StorageList: return new StorageListResponse(wrapper, parent);
     case StorageRead: return new StorageReadResponse(wrapper, parent);
     case GuiScreenFrame: return new GuiScreenFrameResponse(wrapper, parent);
+    case PropertyGet: return new PropertyGetResponse(wrapper, parent);
     case Unknown:
     default: return nullptr;
     }
@@ -113,6 +116,7 @@ MainResponseInterface::ResponseType MainResponse::tagToResponseType(pb_size_t ta
     case PB_Main_system_device_info_response_tag: return SystemDeviceInfo;
     case PB_Main_system_get_datetime_response_tag: return SystemGetDateTime;
     case PB_Main_system_update_response_tag: return SystemUpdate;
+    case PB_Main_system_protobuf_version_response_tag: return SystemProtobufVersion;
 
     case PB_Main_storage_list_response_tag: return StorageList;
     case PB_Main_storage_read_response_tag: return StorageRead;
@@ -121,6 +125,8 @@ MainResponseInterface::ResponseType MainResponse::tagToResponseType(pb_size_t ta
     case PB_Main_storage_info_response_tag: return StorageInfo;
 
     case PB_Main_gui_screen_frame_tag: return GuiScreenFrame;
+
+    case PB_Main_property_get_response_tag: return PropertyGet;
     default: return Unknown;
     }
 }
diff --git a/plugins/flipperproto0/messages/application.pb.c b/plugins/flipperproto0/messages/application.pb.c
index c353e871..b0c91d73 100644
--- a/plugins/flipperproto0/messages/application.pb.c
+++ b/plugins/flipperproto0/messages/application.pb.c
@@ -30,5 +30,14 @@ PB_BIND(PB_App_AppButtonReleaseRequest, PB_App_AppButtonReleaseRequest, AUTO)
 PB_BIND(PB_App_AppStateResponse, PB_App_AppStateResponse, AUTO)
 
 
+PB_BIND(PB_App_GetErrorRequest, PB_App_GetErrorRequest, AUTO)
+
+
+PB_BIND(PB_App_GetErrorResponse, PB_App_GetErrorResponse, AUTO)
+
+
+PB_BIND(PB_App_DataExchangeRequest, PB_App_DataExchangeRequest, AUTO)
+
+
 
 
diff --git a/plugins/flipperproto0/messages/application.pb.h b/plugins/flipperproto0/messages/application.pb.h
index c5af9bf0..10f94a16 100644
--- a/plugins/flipperproto0/messages/application.pb.h
+++ b/plugins/flipperproto0/messages/application.pb.h
@@ -24,6 +24,14 @@ typedef struct _PB_App_AppExitRequest {
     char dummy_field;
 } PB_App_AppExitRequest;
 
+typedef struct _PB_App_DataExchangeRequest { 
+    pb_bytes_array_t *data; 
+} PB_App_DataExchangeRequest;
+
+typedef struct _PB_App_GetErrorRequest { 
+    char dummy_field;
+} PB_App_GetErrorRequest;
+
 typedef struct _PB_App_LockStatusRequest { 
     char dummy_field;
 } PB_App_LockStatusRequest;
@@ -45,6 +53,11 @@ typedef struct _PB_App_AppStateResponse {
     PB_App_AppState state; 
 } PB_App_AppStateResponse;
 
+typedef struct _PB_App_GetErrorResponse { 
+    uint32_t code; 
+    char *text; 
+} PB_App_GetErrorResponse;
+
 typedef struct _PB_App_LockStatusResponse { 
     bool locked; 
 } PB_App_LockStatusResponse;
@@ -69,6 +82,9 @@ extern "C" {
 #define PB_App_AppButtonPressRequest_init_default {""}
 #define PB_App_AppButtonReleaseRequest_init_default {0}
 #define PB_App_AppStateResponse_init_default     {_PB_App_AppState_MIN}
+#define PB_App_GetErrorRequest_init_default      {0}
+#define PB_App_GetErrorResponse_init_default     {0, NULL}
+#define PB_App_DataExchangeRequest_init_default  {NULL}
 #define PB_App_StartRequest_init_zero            {NULL, NULL}
 #define PB_App_LockStatusRequest_init_zero       {0}
 #define PB_App_LockStatusResponse_init_zero      {0}
@@ -77,13 +93,19 @@ extern "C" {
 #define PB_App_AppButtonPressRequest_init_zero   {""}
 #define PB_App_AppButtonReleaseRequest_init_zero {0}
 #define PB_App_AppStateResponse_init_zero        {_PB_App_AppState_MIN}
+#define PB_App_GetErrorRequest_init_zero         {0}
+#define PB_App_GetErrorResponse_init_zero        {0, NULL}
+#define PB_App_DataExchangeRequest_init_zero     {NULL}
 
 /* Field tags (for use in manual encoding/decoding) */
+#define PB_App_DataExchangeRequest_data_tag      1
 #define PB_App_StartRequest_name_tag             1
 #define PB_App_StartRequest_args_tag             2
 #define PB_App_AppButtonPressRequest_args_tag    1
 #define PB_App_AppLoadFileRequest_path_tag       1
 #define PB_App_AppStateResponse_state_tag        1
+#define PB_App_GetErrorResponse_code_tag         1
+#define PB_App_GetErrorResponse_text_tag         2
 #define PB_App_LockStatusResponse_locked_tag     1
 
 /* Struct field encoding specification for nanopb */
@@ -128,6 +150,22 @@ X(a, STATIC,   SINGULAR, UENUM,    state,             1)
 #define PB_App_AppStateResponse_CALLBACK NULL
 #define PB_App_AppStateResponse_DEFAULT NULL
 
+#define PB_App_GetErrorRequest_FIELDLIST(X, a) \
+
+#define PB_App_GetErrorRequest_CALLBACK NULL
+#define PB_App_GetErrorRequest_DEFAULT NULL
+
+#define PB_App_GetErrorResponse_FIELDLIST(X, a) \
+X(a, STATIC,   SINGULAR, UINT32,   code,              1) \
+X(a, POINTER,  SINGULAR, STRING,   text,              2)
+#define PB_App_GetErrorResponse_CALLBACK NULL
+#define PB_App_GetErrorResponse_DEFAULT NULL
+
+#define PB_App_DataExchangeRequest_FIELDLIST(X, a) \
+X(a, POINTER,  SINGULAR, BYTES,    data,              1)
+#define PB_App_DataExchangeRequest_CALLBACK NULL
+#define PB_App_DataExchangeRequest_DEFAULT NULL
+
 extern const pb_msgdesc_t PB_App_StartRequest_msg;
 extern const pb_msgdesc_t PB_App_LockStatusRequest_msg;
 extern const pb_msgdesc_t PB_App_LockStatusResponse_msg;
@@ -136,6 +174,9 @@ extern const pb_msgdesc_t PB_App_AppLoadFileRequest_msg;
 extern const pb_msgdesc_t PB_App_AppButtonPressRequest_msg;
 extern const pb_msgdesc_t PB_App_AppButtonReleaseRequest_msg;
 extern const pb_msgdesc_t PB_App_AppStateResponse_msg;
+extern const pb_msgdesc_t PB_App_GetErrorRequest_msg;
+extern const pb_msgdesc_t PB_App_GetErrorResponse_msg;
+extern const pb_msgdesc_t PB_App_DataExchangeRequest_msg;
 
 /* Defines for backwards compatibility with code written before nanopb-0.4.0 */
 #define PB_App_StartRequest_fields &PB_App_StartRequest_msg
@@ -146,14 +187,20 @@ extern const pb_msgdesc_t PB_App_AppStateResponse_msg;
 #define PB_App_AppButtonPressRequest_fields &PB_App_AppButtonPressRequest_msg
 #define PB_App_AppButtonReleaseRequest_fields &PB_App_AppButtonReleaseRequest_msg
 #define PB_App_AppStateResponse_fields &PB_App_AppStateResponse_msg
+#define PB_App_GetErrorRequest_fields &PB_App_GetErrorRequest_msg
+#define PB_App_GetErrorResponse_fields &PB_App_GetErrorResponse_msg
+#define PB_App_DataExchangeRequest_fields &PB_App_DataExchangeRequest_msg
 
 /* Maximum encoded size of messages (where known) */
 /* PB_App_StartRequest_size depends on runtime parameters */
+/* PB_App_GetErrorResponse_size depends on runtime parameters */
+/* PB_App_DataExchangeRequest_size depends on runtime parameters */
 #define PB_App_AppButtonPressRequest_size        515
 #define PB_App_AppButtonReleaseRequest_size      0
 #define PB_App_AppExitRequest_size               0
 #define PB_App_AppLoadFileRequest_size           515
 #define PB_App_AppStateResponse_size             2
+#define PB_App_GetErrorRequest_size              0
 #define PB_App_LockStatusRequest_size            0
 #define PB_App_LockStatusResponse_size           2
 
diff --git a/plugins/flipperproto0/messages/flipper.pb.h b/plugins/flipperproto0/messages/flipper.pb.h
index aa2a6662..63ade943 100644
--- a/plugins/flipperproto0/messages/flipper.pb.h
+++ b/plugins/flipperproto0/messages/flipper.pb.h
@@ -9,6 +9,7 @@
 #include "application.pb.h"
 #include "gui.pb.h"
 #include "gpio.pb.h"
+#include "property.pb.h"
 
 #if PB_PROTO_HEADER_VERSION != 40
 #error Regenerate this file with the current version of nanopb generator.
@@ -127,6 +128,13 @@ typedef struct _PB_Main {
         PB_Gpio_ReadPinResponse gpio_read_pin_response;
         PB_Gpio_WritePin gpio_write_pin;
         PB_App_AppStateResponse app_state_response;
+        PB_Storage_TimestampRequest storage_timestamp_request;
+        PB_Storage_TimestampResponse storage_timestamp_response;
+        PB_Property_GetRequest property_get_request;
+        PB_Property_GetResponse property_get_response;
+        PB_App_GetErrorRequest app_get_error_request;
+        PB_App_GetErrorResponse app_get_error_response;
+        PB_App_DataExchangeRequest app_data_exchange_request;
     } content; 
 } PB_Main;
 
@@ -221,6 +229,13 @@ extern "C" {
 #define PB_Main_gpio_read_pin_response_tag       56
 #define PB_Main_gpio_write_pin_tag               57
 #define PB_Main_app_state_response_tag           58
+#define PB_Main_storage_timestamp_request_tag    59
+#define PB_Main_storage_timestamp_response_tag   60
+#define PB_Main_property_get_request_tag         61
+#define PB_Main_property_get_response_tag        62
+#define PB_Main_app_get_error_request_tag        63
+#define PB_Main_app_get_error_response_tag       64
+#define PB_Main_app_data_exchange_request_tag    65
 #define PB_Region_Band_start_tag                 1
 #define PB_Region_Band_end_tag                   2
 #define PB_Region_Band_power_limit_tag           3
@@ -295,7 +310,14 @@ X(a, STATIC,   ONEOF,    MSG_W_CB, (content,gpio_get_pin_mode_response,content.g
 X(a, STATIC,   ONEOF,    MSG_W_CB, (content,gpio_read_pin,content.gpio_read_pin),  55) \
 X(a, STATIC,   ONEOF,    MSG_W_CB, (content,gpio_read_pin_response,content.gpio_read_pin_response),  56) \
 X(a, STATIC,   ONEOF,    MSG_W_CB, (content,gpio_write_pin,content.gpio_write_pin),  57) \
-X(a, STATIC,   ONEOF,    MSG_W_CB, (content,app_state_response,content.app_state_response),  58)
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,app_state_response,content.app_state_response),  58) \
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,storage_timestamp_request,content.storage_timestamp_request),  59) \
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,storage_timestamp_response,content.storage_timestamp_response),  60) \
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,property_get_request,content.property_get_request),  61) \
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,property_get_response,content.property_get_response),  62) \
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,app_get_error_request,content.app_get_error_request),  63) \
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,app_get_error_response,content.app_get_error_response),  64) \
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,app_data_exchange_request,content.app_data_exchange_request),  65)
 #define PB_Main_CALLBACK NULL
 #define PB_Main_DEFAULT NULL
 #define PB_Main_content_empty_MSGTYPE PB_Empty
@@ -353,6 +375,13 @@ X(a, STATIC,   ONEOF,    MSG_W_CB, (content,app_state_response,content.app_state
 #define PB_Main_content_gpio_read_pin_response_MSGTYPE PB_Gpio_ReadPinResponse
 #define PB_Main_content_gpio_write_pin_MSGTYPE PB_Gpio_WritePin
 #define PB_Main_content_app_state_response_MSGTYPE PB_App_AppStateResponse
+#define PB_Main_content_storage_timestamp_request_MSGTYPE PB_Storage_TimestampRequest
+#define PB_Main_content_storage_timestamp_response_MSGTYPE PB_Storage_TimestampResponse
+#define PB_Main_content_property_get_request_MSGTYPE PB_Property_GetRequest
+#define PB_Main_content_property_get_response_MSGTYPE PB_Property_GetResponse
+#define PB_Main_content_app_get_error_request_MSGTYPE PB_App_GetErrorRequest
+#define PB_Main_content_app_get_error_response_MSGTYPE PB_App_GetErrorResponse
+#define PB_Main_content_app_data_exchange_request_MSGTYPE PB_App_DataExchangeRequest
 
 #define PB_Region_FIELDLIST(X, a) \
 X(a, POINTER,  SINGULAR, BYTES,    country_code,      1) \
@@ -383,14 +412,14 @@ extern const pb_msgdesc_t PB_Region_Band_msg;
 #define PB_Region_Band_fields &PB_Region_Band_msg
 
 /* Maximum encoded size of messages (where known) */
-#if defined(PB_System_PingRequest_size) && defined(PB_System_PingResponse_size) && defined(PB_Storage_ListRequest_size) && defined(PB_Storage_ListResponse_size) && defined(PB_Storage_ReadRequest_size) && defined(PB_Storage_ReadResponse_size) && defined(PB_Storage_WriteRequest_size) && defined(PB_Storage_DeleteRequest_size) && defined(PB_Storage_MkdirRequest_size) && defined(PB_Storage_Md5sumRequest_size) && defined(PB_App_StartRequest_size) && defined(PB_Gui_ScreenFrame_size) && defined(PB_Storage_StatRequest_size) && defined(PB_Storage_StatResponse_size) && defined(PB_Gui_StartVirtualDisplayRequest_size) && defined(PB_Storage_InfoRequest_size) && defined(PB_Storage_RenameRequest_size) && defined(PB_System_DeviceInfoResponse_size) && defined(PB_System_UpdateRequest_size) && defined(PB_Storage_BackupCreateRequest_size) && defined(PB_Storage_BackupRestoreRequest_size) && defined(PB_System_PowerInfoResponse_size)
-union PB_Main_content_size_union {char f5[(6 + PB_System_PingRequest_size)]; char f6[(6 + PB_System_PingResponse_size)]; char f7[(6 + PB_Storage_ListRequest_size)]; char f8[(6 + PB_Storage_ListResponse_size)]; char f9[(6 + PB_Storage_ReadRequest_size)]; char f10[(6 + PB_Storage_ReadResponse_size)]; char f11[(6 + PB_Storage_WriteRequest_size)]; char f12[(6 + PB_Storage_DeleteRequest_size)]; char f13[(6 + PB_Storage_MkdirRequest_size)]; char f14[(6 + PB_Storage_Md5sumRequest_size)]; char f16[(7 + PB_App_StartRequest_size)]; char f22[(7 + PB_Gui_ScreenFrame_size)]; char f24[(7 + PB_Storage_StatRequest_size)]; char f25[(7 + PB_Storage_StatResponse_size)]; char f26[(7 + PB_Gui_StartVirtualDisplayRequest_size)]; char f28[(7 + PB_Storage_InfoRequest_size)]; char f30[(7 + PB_Storage_RenameRequest_size)]; char f33[(7 + PB_System_DeviceInfoResponse_size)]; char f41[(7 + PB_System_UpdateRequest_size)]; char f42[(7 + PB_Storage_BackupCreateRequest_size)]; char f43[(7 + PB_Storage_BackupRestoreRequest_size)]; char f45[(7 + PB_System_PowerInfoResponse_size)]; char f0[519];};
+#if defined(PB_System_PingRequest_size) && defined(PB_System_PingResponse_size) && defined(PB_Storage_ListRequest_size) && defined(PB_Storage_ListResponse_size) && defined(PB_Storage_ReadRequest_size) && defined(PB_Storage_ReadResponse_size) && defined(PB_Storage_WriteRequest_size) && defined(PB_Storage_DeleteRequest_size) && defined(PB_Storage_MkdirRequest_size) && defined(PB_Storage_Md5sumRequest_size) && defined(PB_App_StartRequest_size) && defined(PB_Gui_ScreenFrame_size) && defined(PB_Storage_StatRequest_size) && defined(PB_Storage_StatResponse_size) && defined(PB_Gui_StartVirtualDisplayRequest_size) && defined(PB_Storage_InfoRequest_size) && defined(PB_Storage_RenameRequest_size) && defined(PB_System_DeviceInfoResponse_size) && defined(PB_System_UpdateRequest_size) && defined(PB_Storage_BackupCreateRequest_size) && defined(PB_Storage_BackupRestoreRequest_size) && defined(PB_System_PowerInfoResponse_size) && defined(PB_Storage_TimestampRequest_size) && defined(PB_Property_GetRequest_size) && defined(PB_Property_GetResponse_size) && defined(PB_App_GetErrorResponse_size) && defined(PB_App_DataExchangeRequest_size)
+union PB_Main_content_size_union {char f5[(6 + PB_System_PingRequest_size)]; char f6[(6 + PB_System_PingResponse_size)]; char f7[(6 + PB_Storage_ListRequest_size)]; char f8[(6 + PB_Storage_ListResponse_size)]; char f9[(6 + PB_Storage_ReadRequest_size)]; char f10[(6 + PB_Storage_ReadResponse_size)]; char f11[(6 + PB_Storage_WriteRequest_size)]; char f12[(6 + PB_Storage_DeleteRequest_size)]; char f13[(6 + PB_Storage_MkdirRequest_size)]; char f14[(6 + PB_Storage_Md5sumRequest_size)]; char f16[(7 + PB_App_StartRequest_size)]; char f22[(7 + PB_Gui_ScreenFrame_size)]; char f24[(7 + PB_Storage_StatRequest_size)]; char f25[(7 + PB_Storage_StatResponse_size)]; char f26[(7 + PB_Gui_StartVirtualDisplayRequest_size)]; char f28[(7 + PB_Storage_InfoRequest_size)]; char f30[(7 + PB_Storage_RenameRequest_size)]; char f33[(7 + PB_System_DeviceInfoResponse_size)]; char f41[(7 + PB_System_UpdateRequest_size)]; char f42[(7 + PB_Storage_BackupCreateRequest_size)]; char f43[(7 + PB_Storage_BackupRestoreRequest_size)]; char f45[(7 + PB_System_PowerInfoResponse_size)]; char f59[(7 + PB_Storage_TimestampRequest_size)]; char f61[(7 + PB_Property_GetRequest_size)]; char f62[(7 + PB_Property_GetResponse_size)]; char f64[(7 + PB_App_GetErrorResponse_size)]; char f65[(7 + PB_App_DataExchangeRequest_size)]; char f0[519];};
 #endif
 /* PB_Region_size depends on runtime parameters */
 #define PB_Empty_size                            0
 #define PB_Region_Band_size                      26
 #define PB_StopSession_size                      0
-#if defined(PB_System_PingRequest_size) && defined(PB_System_PingResponse_size) && defined(PB_Storage_ListRequest_size) && defined(PB_Storage_ListResponse_size) && defined(PB_Storage_ReadRequest_size) && defined(PB_Storage_ReadResponse_size) && defined(PB_Storage_WriteRequest_size) && defined(PB_Storage_DeleteRequest_size) && defined(PB_Storage_MkdirRequest_size) && defined(PB_Storage_Md5sumRequest_size) && defined(PB_App_StartRequest_size) && defined(PB_Gui_ScreenFrame_size) && defined(PB_Storage_StatRequest_size) && defined(PB_Storage_StatResponse_size) && defined(PB_Gui_StartVirtualDisplayRequest_size) && defined(PB_Storage_InfoRequest_size) && defined(PB_Storage_RenameRequest_size) && defined(PB_System_DeviceInfoResponse_size) && defined(PB_System_UpdateRequest_size) && defined(PB_Storage_BackupCreateRequest_size) && defined(PB_Storage_BackupRestoreRequest_size) && defined(PB_System_PowerInfoResponse_size)
+#if defined(PB_System_PingRequest_size) && defined(PB_System_PingResponse_size) && defined(PB_Storage_ListRequest_size) && defined(PB_Storage_ListResponse_size) && defined(PB_Storage_ReadRequest_size) && defined(PB_Storage_ReadResponse_size) && defined(PB_Storage_WriteRequest_size) && defined(PB_Storage_DeleteRequest_size) && defined(PB_Storage_MkdirRequest_size) && defined(PB_Storage_Md5sumRequest_size) && defined(PB_App_StartRequest_size) && defined(PB_Gui_ScreenFrame_size) && defined(PB_Storage_StatRequest_size) && defined(PB_Storage_StatResponse_size) && defined(PB_Gui_StartVirtualDisplayRequest_size) && defined(PB_Storage_InfoRequest_size) && defined(PB_Storage_RenameRequest_size) && defined(PB_System_DeviceInfoResponse_size) && defined(PB_System_UpdateRequest_size) && defined(PB_Storage_BackupCreateRequest_size) && defined(PB_Storage_BackupRestoreRequest_size) && defined(PB_System_PowerInfoResponse_size) && defined(PB_Storage_TimestampRequest_size) && defined(PB_Property_GetRequest_size) && defined(PB_Property_GetResponse_size) && defined(PB_App_GetErrorResponse_size) && defined(PB_App_DataExchangeRequest_size)
 #define PB_Main_size                             (10 + sizeof(union PB_Main_content_size_union))
 #endif
 
diff --git a/plugins/flipperproto0/messages/property.pb.c b/plugins/flipperproto0/messages/property.pb.c
new file mode 100644
index 00000000..0668bac4
--- /dev/null
+++ b/plugins/flipperproto0/messages/property.pb.c
@@ -0,0 +1,15 @@
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.4.6-dev */
+
+#include "property.pb.h"
+#if PB_PROTO_HEADER_VERSION != 40
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+PB_BIND(PB_Property_GetRequest, PB_Property_GetRequest, AUTO)
+
+
+PB_BIND(PB_Property_GetResponse, PB_Property_GetResponse, AUTO)
+
+
+
diff --git a/plugins/flipperproto0/messages/property.pb.h b/plugins/flipperproto0/messages/property.pb.h
new file mode 100644
index 00000000..14b47277
--- /dev/null
+++ b/plugins/flipperproto0/messages/property.pb.h
@@ -0,0 +1,65 @@
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.4.6-dev */
+
+#ifndef PB_PB_PROPERTY_PROPERTY_PB_H_INCLUDED
+#define PB_PB_PROPERTY_PROPERTY_PB_H_INCLUDED
+#include <pb.h>
+
+#if PB_PROTO_HEADER_VERSION != 40
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+/* Struct definitions */
+typedef struct _PB_Property_GetRequest { 
+    char *key; 
+} PB_Property_GetRequest;
+
+typedef struct _PB_Property_GetResponse { 
+    char *key; 
+    char *value; 
+} PB_Property_GetResponse;
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Initializer values for message structs */
+#define PB_Property_GetRequest_init_default      {NULL}
+#define PB_Property_GetResponse_init_default     {NULL, NULL}
+#define PB_Property_GetRequest_init_zero         {NULL}
+#define PB_Property_GetResponse_init_zero        {NULL, NULL}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define PB_Property_GetRequest_key_tag           1
+#define PB_Property_GetResponse_key_tag          1
+#define PB_Property_GetResponse_value_tag        2
+
+/* Struct field encoding specification for nanopb */
+#define PB_Property_GetRequest_FIELDLIST(X, a) \
+X(a, POINTER,  SINGULAR, STRING,   key,               1)
+#define PB_Property_GetRequest_CALLBACK NULL
+#define PB_Property_GetRequest_DEFAULT NULL
+
+#define PB_Property_GetResponse_FIELDLIST(X, a) \
+X(a, POINTER,  SINGULAR, STRING,   key,               1) \
+X(a, POINTER,  SINGULAR, STRING,   value,             2)
+#define PB_Property_GetResponse_CALLBACK NULL
+#define PB_Property_GetResponse_DEFAULT NULL
+
+extern const pb_msgdesc_t PB_Property_GetRequest_msg;
+extern const pb_msgdesc_t PB_Property_GetResponse_msg;
+
+/* Defines for backwards compatibility with code written before nanopb-0.4.0 */
+#define PB_Property_GetRequest_fields &PB_Property_GetRequest_msg
+#define PB_Property_GetResponse_fields &PB_Property_GetResponse_msg
+
+/* Maximum encoded size of messages (where known) */
+/* PB_Property_GetRequest_size depends on runtime parameters */
+/* PB_Property_GetResponse_size depends on runtime parameters */
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif
diff --git a/plugins/flipperproto0/messages/storage.pb.c b/plugins/flipperproto0/messages/storage.pb.c
index 6caa5552..bcb1e8b8 100644
--- a/plugins/flipperproto0/messages/storage.pb.c
+++ b/plugins/flipperproto0/messages/storage.pb.c
@@ -15,6 +15,12 @@ PB_BIND(PB_Storage_InfoRequest, PB_Storage_InfoRequest, AUTO)
 PB_BIND(PB_Storage_InfoResponse, PB_Storage_InfoResponse, AUTO)
 
 
+PB_BIND(PB_Storage_TimestampRequest, PB_Storage_TimestampRequest, AUTO)
+
+
+PB_BIND(PB_Storage_TimestampResponse, PB_Storage_TimestampResponse, AUTO)
+
+
 PB_BIND(PB_Storage_StatRequest, PB_Storage_StatRequest, AUTO)
 
 
diff --git a/plugins/flipperproto0/messages/storage.pb.h b/plugins/flipperproto0/messages/storage.pb.h
index 9cbdc115..9556096b 100644
--- a/plugins/flipperproto0/messages/storage.pb.h
+++ b/plugins/flipperproto0/messages/storage.pb.h
@@ -53,6 +53,10 @@ typedef struct _PB_Storage_StatRequest {
     char *path; 
 } PB_Storage_StatRequest;
 
+typedef struct _PB_Storage_TimestampRequest { 
+    char *path; 
+} PB_Storage_TimestampRequest;
+
 typedef struct _PB_Storage_DeleteRequest { 
     char *path; 
     bool recursive; 
@@ -74,6 +78,10 @@ typedef struct _PB_Storage_Md5sumResponse {
     char md5sum[33]; 
 } PB_Storage_Md5sumResponse;
 
+typedef struct _PB_Storage_TimestampResponse { 
+    uint32_t timestamp; 
+} PB_Storage_TimestampResponse;
+
 typedef struct _PB_Storage_ListResponse { 
     pb_size_t file_count;
     PB_Storage_File file[8]; 
@@ -110,6 +118,8 @@ extern "C" {
 #define PB_Storage_File_init_default             {_PB_Storage_File_FileType_MIN, NULL, 0, NULL}
 #define PB_Storage_InfoRequest_init_default      {NULL}
 #define PB_Storage_InfoResponse_init_default     {0, 0}
+#define PB_Storage_TimestampRequest_init_default {NULL}
+#define PB_Storage_TimestampResponse_init_default {0}
 #define PB_Storage_StatRequest_init_default      {NULL}
 #define PB_Storage_StatResponse_init_default     {false, PB_Storage_File_init_default}
 #define PB_Storage_ListRequest_init_default      {NULL}
@@ -127,6 +137,8 @@ extern "C" {
 #define PB_Storage_File_init_zero                {_PB_Storage_File_FileType_MIN, NULL, 0, NULL}
 #define PB_Storage_InfoRequest_init_zero         {NULL}
 #define PB_Storage_InfoResponse_init_zero        {0, 0}
+#define PB_Storage_TimestampRequest_init_zero    {NULL}
+#define PB_Storage_TimestampResponse_init_zero   {0}
 #define PB_Storage_StatRequest_init_zero         {NULL}
 #define PB_Storage_StatResponse_init_zero        {false, PB_Storage_File_init_zero}
 #define PB_Storage_ListRequest_init_zero         {NULL}
@@ -153,6 +165,7 @@ extern "C" {
 #define PB_Storage_RenameRequest_old_path_tag    1
 #define PB_Storage_RenameRequest_new_path_tag    2
 #define PB_Storage_StatRequest_path_tag          1
+#define PB_Storage_TimestampRequest_path_tag     1
 #define PB_Storage_DeleteRequest_path_tag        1
 #define PB_Storage_DeleteRequest_recursive_tag   2
 #define PB_Storage_File_type_tag                 1
@@ -162,6 +175,7 @@ extern "C" {
 #define PB_Storage_InfoResponse_total_space_tag  1
 #define PB_Storage_InfoResponse_free_space_tag   2
 #define PB_Storage_Md5sumResponse_md5sum_tag     1
+#define PB_Storage_TimestampResponse_timestamp_tag 1
 #define PB_Storage_ListResponse_file_tag         1
 #define PB_Storage_ReadResponse_file_tag         1
 #define PB_Storage_StatResponse_file_tag         1
@@ -188,6 +202,16 @@ X(a, STATIC,   SINGULAR, UINT64,   free_space,        2)
 #define PB_Storage_InfoResponse_CALLBACK NULL
 #define PB_Storage_InfoResponse_DEFAULT NULL
 
+#define PB_Storage_TimestampRequest_FIELDLIST(X, a) \
+X(a, POINTER,  SINGULAR, STRING,   path,              1)
+#define PB_Storage_TimestampRequest_CALLBACK NULL
+#define PB_Storage_TimestampRequest_DEFAULT NULL
+
+#define PB_Storage_TimestampResponse_FIELDLIST(X, a) \
+X(a, STATIC,   SINGULAR, UINT32,   timestamp,         1)
+#define PB_Storage_TimestampResponse_CALLBACK NULL
+#define PB_Storage_TimestampResponse_DEFAULT NULL
+
 #define PB_Storage_StatRequest_FIELDLIST(X, a) \
 X(a, POINTER,  SINGULAR, STRING,   path,              1)
 #define PB_Storage_StatRequest_CALLBACK NULL
@@ -268,6 +292,8 @@ X(a, POINTER,  SINGULAR, STRING,   archive_path,      1)
 extern const pb_msgdesc_t PB_Storage_File_msg;
 extern const pb_msgdesc_t PB_Storage_InfoRequest_msg;
 extern const pb_msgdesc_t PB_Storage_InfoResponse_msg;
+extern const pb_msgdesc_t PB_Storage_TimestampRequest_msg;
+extern const pb_msgdesc_t PB_Storage_TimestampResponse_msg;
 extern const pb_msgdesc_t PB_Storage_StatRequest_msg;
 extern const pb_msgdesc_t PB_Storage_StatResponse_msg;
 extern const pb_msgdesc_t PB_Storage_ListRequest_msg;
@@ -287,6 +313,8 @@ extern const pb_msgdesc_t PB_Storage_BackupRestoreRequest_msg;
 #define PB_Storage_File_fields &PB_Storage_File_msg
 #define PB_Storage_InfoRequest_fields &PB_Storage_InfoRequest_msg
 #define PB_Storage_InfoResponse_fields &PB_Storage_InfoResponse_msg
+#define PB_Storage_TimestampRequest_fields &PB_Storage_TimestampRequest_msg
+#define PB_Storage_TimestampResponse_fields &PB_Storage_TimestampResponse_msg
 #define PB_Storage_StatRequest_fields &PB_Storage_StatRequest_msg
 #define PB_Storage_StatResponse_fields &PB_Storage_StatResponse_msg
 #define PB_Storage_ListRequest_fields &PB_Storage_ListRequest_msg
@@ -305,6 +333,7 @@ extern const pb_msgdesc_t PB_Storage_BackupRestoreRequest_msg;
 /* Maximum encoded size of messages (where known) */
 /* PB_Storage_File_size depends on runtime parameters */
 /* PB_Storage_InfoRequest_size depends on runtime parameters */
+/* PB_Storage_TimestampRequest_size depends on runtime parameters */
 /* PB_Storage_StatRequest_size depends on runtime parameters */
 /* PB_Storage_StatResponse_size depends on runtime parameters */
 /* PB_Storage_ListRequest_size depends on runtime parameters */
@@ -320,6 +349,7 @@ extern const pb_msgdesc_t PB_Storage_BackupRestoreRequest_msg;
 /* PB_Storage_BackupRestoreRequest_size depends on runtime parameters */
 #define PB_Storage_InfoResponse_size             22
 #define PB_Storage_Md5sumResponse_size           34
+#define PB_Storage_TimestampResponse_size        6
 
 #ifdef __cplusplus
 } /* extern "C" */
diff --git a/plugins/flipperproto0/propertyrequest.cpp b/plugins/flipperproto0/propertyrequest.cpp
new file mode 100644
index 00000000..4683b370
--- /dev/null
+++ b/plugins/flipperproto0/propertyrequest.cpp
@@ -0,0 +1,9 @@
+#include "propertyrequest.h"
+
+PropertyGetRequest::PropertyGetRequest(uint32_t id, const QByteArray &key):
+    MainRequest(id, PB_Main_property_get_request_tag),
+    m_key(key)
+{
+    auto &content = m_message.content.property_get_request;
+    content.key = m_key.data();
+}
diff --git a/plugins/flipperproto0/propertyrequest.h b/plugins/flipperproto0/propertyrequest.h
new file mode 100644
index 00000000..e6d43bfe
--- /dev/null
+++ b/plugins/flipperproto0/propertyrequest.h
@@ -0,0 +1,12 @@
+#pragma once
+
+#include "mainrequest.h"
+
+class PropertyGetRequest : public MainRequest
+{
+public:
+    PropertyGetRequest(uint32_t id, const QByteArray &key);
+private:
+    QByteArray m_key;
+};
+
diff --git a/plugins/flipperproto0/propertyresponse.cpp b/plugins/flipperproto0/propertyresponse.cpp
new file mode 100644
index 00000000..ba670d53
--- /dev/null
+++ b/plugins/flipperproto0/propertyresponse.cpp
@@ -0,0 +1,15 @@
+#include "propertyresponse.h"
+
+PropertyGetResponse::PropertyGetResponse(MessageWrapper &wrapper, QObject *parent):
+    MainResponse(wrapper, parent)
+{}
+
+const QByteArray PropertyGetResponse::key() const
+{
+    return message().content.property_get_response.key;
+}
+
+const QByteArray PropertyGetResponse::value() const
+{
+    return message().content.property_get_response.value;
+}
diff --git a/plugins/flipperproto0/propertyresponse.h b/plugins/flipperproto0/propertyresponse.h
new file mode 100644
index 00000000..b7111620
--- /dev/null
+++ b/plugins/flipperproto0/propertyresponse.h
@@ -0,0 +1,16 @@
+#pragma once
+
+#include "mainresponse.h"
+#include "propertyresponseinterface.h"
+
+class PropertyGetResponse : public MainResponse, public PropertyGetResponseInterface
+{
+    Q_OBJECT
+    Q_INTERFACES(PropertyGetResponseInterface)
+
+public:
+    PropertyGetResponse(MessageWrapper &wrapper, QObject *parent = nullptr);
+    const QByteArray key() const override;
+    const QByteArray value() const override;
+};
+
diff --git a/plugins/flipperproto0/protobufplugin.cpp b/plugins/flipperproto0/protobufplugin.cpp
index cd584ba5..59b5b426 100644
--- a/plugins/flipperproto0/protobufplugin.cpp
+++ b/plugins/flipperproto0/protobufplugin.cpp
@@ -8,6 +8,7 @@
 #include "statusrequest.h"
 #include "systemrequest.h"
 #include "storagerequest.h"
+#include "propertyrequest.h"
 
 #include "regiondata.h"
 
@@ -16,12 +17,12 @@ ProtobufPlugin::ProtobufPlugin(QObject *parent):
     m_versionMinor(0)
 {}
 
-int ProtobufPlugin::versionMajor() const
+uint32_t ProtobufPlugin::versionMajor() const
 {
     return 0;
 }
 
-void ProtobufPlugin::setMinorVersion(int version)
+void ProtobufPlugin::setMinorVersion(uint32_t version)
 {
     m_versionMinor = version;
 }
@@ -73,6 +74,11 @@ const QByteArray ProtobufPlugin::systemUpdateRequest(uint32_t id, const QByteArr
     return SystemUpdateRequest(id, manifestPath).encode();
 }
 
+const QByteArray ProtobufPlugin::systemProtobufVersion(uint32_t id) const
+{
+    return SystemProtobufVersionRequest(id).encode();
+}
+
 const QByteArray ProtobufPlugin::guiStartScreenStream(uint32_t id) const
 {
     return GuiStartScreenStreamRequest(id).encode();
@@ -143,6 +149,11 @@ const QByteArray ProtobufPlugin::storageWrite(uint32_t id, const QByteArray &pat
     return StorageWriteRequest(id, path, data, hasNext).encode();
 }
 
+const QByteArray ProtobufPlugin::propertyGet(uint32_t id, const QByteArray &key) const
+{
+    return PropertyGetRequest(id, key).encode();
+}
+
 const QByteArray ProtobufPlugin::regionBands(const QByteArray &countryCode, const BandInfoList &bands) const
 {
     return RegionData(countryCode, bands).encode();
diff --git a/plugins/flipperproto0/protobufplugin.h b/plugins/flipperproto0/protobufplugin.h
index 7a46fd21..36773afc 100644
--- a/plugins/flipperproto0/protobufplugin.h
+++ b/plugins/flipperproto0/protobufplugin.h
@@ -14,8 +14,8 @@ class ProtobufPlugin : public QObject, public ProtobufPluginInterface
 public:
     ProtobufPlugin(QObject *parent = nullptr);
 
-    int versionMajor() const override;
-    void setMinorVersion(int version) override;
+    uint32_t versionMajor() const override;
+    void setMinorVersion(uint32_t version) override;
 
     const QByteArray statusPing(uint32_t id, const QByteArray &data) const override;
 
@@ -25,6 +25,7 @@ class ProtobufPlugin : public QObject, public ProtobufPluginInterface
     const QByteArray systemGetDateTime(uint32_t id) const override;
     const QByteArray systemSetDateTime(uint32_t id, const QDateTime &dateTime) const override;
     const QByteArray systemUpdateRequest(uint32_t id, const QByteArray &manifestPath) const override;
+    const QByteArray systemProtobufVersion(uint32_t id) const override;
 
     const QByteArray guiStartScreenStream(uint32_t id) const override;
     const QByteArray guiStopScreenStream(uint32_t id) const override;
@@ -42,10 +43,12 @@ class ProtobufPlugin : public QObject, public ProtobufPluginInterface
     const QByteArray storageRead(uint32_t id, const QByteArray &path) const override;
     const QByteArray storageWrite(uint32_t id, const QByteArray &path, const QByteArray &data, bool hasNext) const override;
 
+    const QByteArray propertyGet(uint32_t id, const QByteArray &key) const override;
+
     const QByteArray regionBands(const QByteArray &countryCode, const BandInfoList &bands) const override;
 
     QObject *decode(const QByteArray &buffer, QObject *parent = nullptr) const override;
 
 private:
-    int m_versionMinor;
+    uint32_t m_versionMinor;
 };
diff --git a/plugins/flipperproto0/systemrequest.cpp b/plugins/flipperproto0/systemrequest.cpp
index bf1f2d68..cb0e8c74 100644
--- a/plugins/flipperproto0/systemrequest.cpp
+++ b/plugins/flipperproto0/systemrequest.cpp
@@ -46,3 +46,7 @@ SystemUpdateRequest::SystemUpdateRequest(uint32_t id, const QByteArray &manifest
     auto &content = m_message.content.system_update_request;
     content.update_manifest = m_manifestPath.data();
 }
+
+SystemProtobufVersionRequest::SystemProtobufVersionRequest(uint32_t id):
+    MainRequest(id, PB_Main_system_protobuf_version_request_tag)
+{}
diff --git a/plugins/flipperproto0/systemrequest.h b/plugins/flipperproto0/systemrequest.h
index 8a20404b..58716e18 100644
--- a/plugins/flipperproto0/systemrequest.h
+++ b/plugins/flipperproto0/systemrequest.h
@@ -41,3 +41,9 @@ class SystemUpdateRequest : public MainRequest
 private:
     QByteArray m_manifestPath;
 };
+
+class SystemProtobufVersionRequest : public MainRequest
+{
+public:
+    SystemProtobufVersionRequest(uint32_t id);
+};
diff --git a/plugins/flipperproto0/systemresponse.cpp b/plugins/flipperproto0/systemresponse.cpp
index 9bf5ecf5..4a848ee4 100644
--- a/plugins/flipperproto0/systemresponse.cpp
+++ b/plugins/flipperproto0/systemresponse.cpp
@@ -69,3 +69,17 @@ const QString SystemUpdateResponse::resultString() const
         return QStringLiteral("Unknown error");
     }
 }
+
+SystemProtobufVersionResponse::SystemProtobufVersionResponse(MessageWrapper &wrapper, QObject *parent):
+    MainResponse(wrapper, parent)
+{}
+
+uint32_t SystemProtobufVersionResponse::versionMajor() const
+{
+    return message().content.system_protobuf_version_response.major;
+}
+
+uint32_t SystemProtobufVersionResponse::versionMinor() const
+{
+    return message().content.system_protobuf_version_response.minor;
+}
diff --git a/plugins/flipperproto0/systemresponse.h b/plugins/flipperproto0/systemresponse.h
index 30575b55..3db25044 100644
--- a/plugins/flipperproto0/systemresponse.h
+++ b/plugins/flipperproto0/systemresponse.h
@@ -34,3 +34,14 @@ class SystemUpdateResponse : public MainResponse, public SystemUpdateResponseInt
     bool isResultOk() const;
     const QString resultString() const;
 };
+
+class SystemProtobufVersionResponse : public MainResponse, public SystemProtobufVersionResponseInterface
+{
+    Q_OBJECT
+    Q_INTERFACES(SystemProtobufVersionResponseInterface)
+
+public:
+    SystemProtobufVersionResponse(MessageWrapper &wrapper, QObject *parent = nullptr);
+    uint32_t versionMajor() const override;
+    uint32_t versionMinor() const override;
+};
diff --git a/plugins/protobufinterface/mainresponseinterface.h b/plugins/protobufinterface/mainresponseinterface.h
index 3727de37..947d0476 100644
--- a/plugins/protobufinterface/mainresponseinterface.h
+++ b/plugins/protobufinterface/mainresponseinterface.h
@@ -14,6 +14,7 @@ class MainResponseInterface
         SystemDeviceInfo,
         SystemGetDateTime,
         SystemUpdate,
+        SystemProtobufVersion,
 
         StorageList,
         StorageRead,
@@ -22,6 +23,8 @@ class MainResponseInterface
         StorageInfo,
 
         GuiScreenFrame,
+
+        PropertyGet,
     };
 
     virtual ~MainResponseInterface() {}
diff --git a/plugins/protobufinterface/propertyresponseinterface.h b/plugins/protobufinterface/propertyresponseinterface.h
new file mode 100644
index 00000000..dee89acc
--- /dev/null
+++ b/plugins/protobufinterface/propertyresponseinterface.h
@@ -0,0 +1,15 @@
+#pragma once
+
+#include <QtPlugin>
+#include <QByteArray>
+
+class PropertyGetResponseInterface
+{
+public:
+    virtual const QByteArray key() const = 0;
+    virtual const QByteArray value() const = 0;
+};
+
+QT_BEGIN_NAMESPACE
+Q_DECLARE_INTERFACE(PropertyGetResponseInterface, "com.flipperdevices.PropertyGetResponseInterface/1.0")
+QT_END_NAMESPACE
diff --git a/plugins/protobufinterface/protobufinterface.pro b/plugins/protobufinterface/protobufinterface.pro
index acb56561..dd035ece 100644
--- a/plugins/protobufinterface/protobufinterface.pro
+++ b/plugins/protobufinterface/protobufinterface.pro
@@ -9,6 +9,7 @@ HEADERS += \
     bandinfo.h \
     guiresponseinterface.h \
     mainresponseinterface.h \
+    propertyresponseinterface.h \
     protobufplugininterface.h \
     statusresponseinterface.h \
     storageresponseinterface.h \
diff --git a/plugins/protobufinterface/protobufplugininterface.h b/plugins/protobufinterface/protobufplugininterface.h
index b8a3b204..ed95e361 100644
--- a/plugins/protobufinterface/protobufplugininterface.h
+++ b/plugins/protobufinterface/protobufplugininterface.h
@@ -16,8 +16,8 @@ class ProtobufPluginInterface
 
     virtual ~ProtobufPluginInterface() {}
 
-    virtual int versionMajor() const = 0;
-    virtual void setMinorVersion(int version) = 0;
+    virtual uint32_t versionMajor() const = 0;
+    virtual void setMinorVersion(uint32_t version) = 0;
 
     virtual const QByteArray statusPing(uint32_t id, const QByteArray &data = QByteArray()) const = 0;
     virtual const QByteArray systemFactoryReset(uint32_t id) const = 0;
@@ -26,6 +26,7 @@ class ProtobufPluginInterface
     virtual const QByteArray systemGetDateTime(uint32_t id) const = 0;
     virtual const QByteArray systemSetDateTime(uint32_t id, const QDateTime &dateTime) const = 0;
     virtual const QByteArray systemUpdateRequest(uint32_t id, const QByteArray &manifestPath) const = 0;
+    virtual const QByteArray systemProtobufVersion(uint32_t id) const = 0;
 
     virtual const QByteArray guiStartScreenStream(uint32_t id) const = 0;
     virtual const QByteArray guiStopScreenStream(uint32_t id) const = 0;
@@ -43,6 +44,8 @@ class ProtobufPluginInterface
     virtual const QByteArray storageRead(uint32_t id, const QByteArray &path) const = 0;
     virtual const QByteArray storageWrite(uint32_t id, const QByteArray &path, const QByteArray &data, bool hasNext) const = 0;
 
+    virtual const QByteArray propertyGet(uint32_t id, const QByteArray &key) const = 0;
+
     virtual const QByteArray regionBands(const QByteArray &countryCode, const BandInfoList &bands) const = 0;
 
     virtual QObject *decode(const QByteArray &buffer, QObject *parent = nullptr) const = 0;
diff --git a/plugins/protobufinterface/systemresponseinterface.h b/plugins/protobufinterface/systemresponseinterface.h
index 2081539e..d22c81c4 100644
--- a/plugins/protobufinterface/systemresponseinterface.h
+++ b/plugins/protobufinterface/systemresponseinterface.h
@@ -24,8 +24,16 @@ class SystemUpdateResponseInterface
     virtual const QString resultString() const = 0;
 };
 
+class SystemProtobufVersionResponseInterface
+{
+public:
+    virtual uint32_t versionMajor() const = 0;
+    virtual uint32_t versionMinor() const = 0;
+};
+
 QT_BEGIN_NAMESPACE
 Q_DECLARE_INTERFACE(SystemDeviceInfoResponseInterface, "com.flipperdevices.SystemDeviceInfoResponseInterface/1.0")
 Q_DECLARE_INTERFACE(SystemGetDateTimeResponseInterface, "com.flipperdevices.SystemGetDateTimeResponseInterface/1.0")
 Q_DECLARE_INTERFACE(SystemUpdateResponseInterface, "com.flipperdevices.SystemUpdateResponseInterface/1.0")
+Q_DECLARE_INTERFACE(SystemProtobufVersionResponseInterface, "com.flipperdevices.SystemProtobufVersionResponseInterface/1.0")
 QT_END_NAMESPACE