diff --git a/test_tools/update_LH_ver_with_download.sh b/test_tools/update_LH_ver_with_download.sh
new file mode 100755
index 0000000000..e435975c28
--- /dev/null
+++ b/test_tools/update_LH_ver_with_download.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+
+# Check if the correct number of arguments are provided
+if [ "$#" -ne 3 ]; then
+    echo ""
+    echo "Usage: $0 <old_version> <new_version> <longhorn_version>"
+    echo ""
+    echo "Arguments:"
+    echo "  <old_version>       The version of Longhorn images to be replaced (e.g., v1.6.3, v1.7.1)."
+    echo "  <new_version>       The new version of Longhorn images to use (e.g., v1.6.3-dev-20240922, v1.7.x-head)."
+    echo "  <longhorn_version>  The branch or tag from which to download the Longhorn YAML file."
+    echo ""
+    echo "  Examples:"
+    echo ""
+    echo "    # For downloading longhorn.yaml from the v1.6.x branch"
+    echo "    $0 v1.6.3 v1.6.3-dev-20240922 v1.6.x"
+    echo ""
+    echo "    # For downloading longhorn.yaml from the v1.7.x branch"
+    echo "    $0 v1.7.1 v1.7.x-head v1.7.x"
+    echo ""
+    echo "    # For downloading longhorn.yaml from the master branch"
+    echo "    $0 master-head v1.8.0-dev-20240922 master"
+    echo ""
+    exit 1
+fi
+
+# Capture the input arguments
+OLD_VERSION=$1
+NEW_VERSION=$2
+LONGHORN_VERSION=$3
+
+# Define the file path for the downloaded longhorn.yaml
+FILE_PATH="longhorn.yaml"
+
+# Download the specified version of the longhorn.yaml file
+wget -O "$FILE_PATH" "https://raw.githubusercontent.com/longhorn/longhorn/${LONGHORN_VERSION}/deploy/longhorn.yaml"
+
+# Check if the file was downloaded successfully
+if [ $? -ne 0 ]; then
+    echo "Error downloading longhorn.yaml. Please check the Longhorn version."
+    exit 1
+fi
+
+# Define the list of Longhorn image names
+IMAGES=(
+    "longhornio/longhorn-ui"
+    "longhornio/longhorn-manager"
+    "longhornio/longhorn-engine"
+    "longhornio/longhorn-instance-manager"
+    "longhornio/longhorn-share-manager"
+    "longhornio/backing-image-manager"
+)
+
+# Loop through each image and perform the find/replace
+for IMAGE in "${IMAGES[@]}"; do
+    # Use sed to replace old version with new version
+    sed -i "s|${IMAGE}:${OLD_VERSION}|${IMAGE}:${NEW_VERSION}|g" "$FILE_PATH"
+done
+
+# Define the new filename based on the new version
+NEW_FILE_PATH="longhorn-${NEW_VERSION}.yaml"
+
+# Move the modified file to the new file name
+mv "$FILE_PATH" "$NEW_FILE_PATH"
+
+echo "Replacement complete. Updated file saved as $NEW_FILE_PATH."