diff --git a/Start Stable Diffusion UI.cmd b/Start Stable Diffusion UI.cmd
index 149913a1..d07e743c 100644
--- a/Start Stable Diffusion UI.cmd	
+++ b/Start Stable Diffusion UI.cmd	
@@ -4,7 +4,7 @@ echo. & echo "Stable Diffusion UI - v2.5" & echo.
 
 set PATH=C:\Windows\System32;%PATH%
 
-set RUN_CMD_FILENAME="Start Stable Diffusion UI.cmd"
+set START_CMD_FILENAME="Start Stable Diffusion UI.cmd"
 
 set SD_BASE_DIR=%cd%
 
diff --git a/installer/bootstrap/check-install-dir.bat b/installer/bootstrap/check-install-dir.bat
index 303106be..b2509b00 100644
--- a/installer/bootstrap/check-install-dir.bat
+++ b/installer/bootstrap/check-install-dir.bat
@@ -13,7 +13,7 @@ if /i "%answer:~,1%" NEQ "c" (
     )
 
     xcopy "%SD_BASE_DIR%" "%suggested_dir%" /s /i /Y /Q
-    echo Please run the %RUN_CMD_FILENAME% file inside %suggested_dir% . Do not use this folder anymore > "%SD_BASE_DIR%/READ_ME - DO_NOT_USE_THIS_FOLDER.txt"
+    echo Please run the %START_CMD_FILENAME% file inside %suggested_dir% . Do not use this folder anymore > "%SD_BASE_DIR%/READ_ME - DO_NOT_USE_THIS_FOLDER.txt"
 
     cd %suggested_dir%
 )
\ No newline at end of file
diff --git a/installer/installer/app.py b/installer/installer/app.py
index 75580700..5dea5fb9 100644
--- a/installer/installer/app.py
+++ b/installer/installer/app.py
@@ -3,11 +3,12 @@ import json
 
 # config
 PROJECT_REPO_URL = 'https://github.com/cmdr2/stable-diffusion-ui.git'
-DEFAULT_UPDATE_BRANCH = 'main'
+DEFAULT_UPDATE_BRANCH = 'installer_new'
 
 PROJECT_REPO_DIR_NAME = 'project_repo'
 STABLE_DIFFUSION_REPO_DIR_NAME = 'stable-diffusion'
 
+START_CMD_FILE_NAME = os.environ['START_CMD_FILENAME']
 LOG_FILE_NAME = 'run.log'
 CONFIG_FILE_NAME = 'config.json'
 
diff --git a/installer/installer/tasks/apply_project_update.py b/installer/installer/tasks/apply_project_update.py
index 7993f66c..5c930bf5 100644
--- a/installer/installer/tasks/apply_project_update.py
+++ b/installer/installer/tasks/apply_project_update.py
@@ -1,17 +1,26 @@
 from os import path
 import shutil
 
-from installer import app, helpers
+from installer import app
 
 def run():
     is_developer_mode = app.config.get('is_developer_mode', False)
-    if not is_developer_mode:
-        # @xcopy sd-ui-files\ui ui /s /i /Y
-        # @copy sd-ui-files\scripts\on_sd_start.bat scripts\ /Y
-        # @copy "sd-ui-files\scripts\Start Stable Diffusion UI.cmd" . /Y
+    if is_developer_mode:
+        return
 
-        installer_src_path = path.join(app.project_repo_dir_path, 'installer')
-        ui_src_path = path.join(app.project_repo_dir_path, 'ui')
-        engine_src_path = path.join(app.project_repo_dir_path, 'engine')
+    installer_src_path = path.join(app.project_repo_dir_path, 'installer')
+    ui_src_path = path.join(app.project_repo_dir_path, 'ui')
+    engine_src_path = path.join(app.project_repo_dir_path, 'engine')
 
-        shutil.copytree(ui_src_path, app.ui_dir_path, dirs_exist_ok=True)
+    start_cmd_src_path = path.join(app.project_repo_dir_path, app.START_CMD_FILE_NAME)
+    start_cmd_dst_path = path.join(app.SD_BASE_DIR, app.START_CMD_FILE_NAME)
+
+    shutil.rmtree(app.installer_dir_path, ignore_errors=True)
+    shutil.rmtree(app.ui_dir_path, ignore_errors=True)
+    shutil.rmtree(app.engine_dir_path, ignore_errors=True)
+
+    shutil.copytree(installer_src_path, app.installer_dir_path, dirs_exist_ok=True)
+    shutil.copytree(ui_src_path, app.ui_dir_path, dirs_exist_ok=True)
+    shutil.copytree(engine_src_path, app.engine_dir_path, dirs_exist_ok=True)
+
+    shutil.copy(start_cmd_src_path, start_cmd_dst_path)