Changing the GUID for JammerNetz 2, so you don't lose the original JammerNetz installation, as this contains your secret.

Author: christofmuc

Client/setup_client.iss

@@ -1,8 +1,8 @@
 ; Script generated by the Inno Setup Script Wizard.
 ; SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES!
 
-#define MyAppName "JammerNetz"
-#define MyAppVersion "1.0.0"
+#define MyAppName "JammerNetz 2"
+#define MyAppVersion "2.0.0"
 #define MyAppPublisher "Christof Ruch Beratungs UG (haftungsbeschränkt)"
 #define MyAppURL "https://github.com/christofmuc/JammerNetz"
 #define MyAppExeName "JammerNetzClient.exe"
@@ -11,7 +11,7 @@
 [Setup]
 ; NOTE: The value of AppId uniquely identifies this application. Do not use the same AppId value in installers for other applications.
 ; (To generate a new GUID, click Tools | Generate GUID inside the IDE.)
-AppId={{79860B85-3544-4CDE-BA0C-B56FA2962074}
+AppId={{704C397B-E756-47B0-AB7A-5C52A62E0A3F}
 AppName={#MyAppName}
 AppVersion={#MyAppVersion}
 ;AppVerName={#MyAppName} {#MyAppVersion}