Index: cloud_sync.py
===================================================================
diff -u -rc7fd30aa9eafcefd698820e703b3313a8286cde9 -r029aec0d4746d8a2897e46516cf9d39629d684b5
--- cloud_sync.py	(.../cloud_sync.py)	(revision c7fd30aa9eafcefd698820e703b3313a8286cde9)
+++ cloud_sync.py	(.../cloud_sync.py)	(revision 029aec0d4746d8a2897e46516cf9d39629d684b5)
@@ -32,36 +32,45 @@
 
 sleep(5)  # wait for UI to prepare the configurations partition
 
-
-# set the execution mode regarding the passed command line argumment
-
 try:
     ok = False
     print(SETUP_CONSOLE_LINE)
 
-    if EXEC_MODE_REGISTRATION_KEY in arguments:
+    if EXEC_MODE_UPGRADE_KEY in arguments:      # ---------- upgrade
         # Read from $HOME
-        if os.path.isfile(CONFIG_PATH) and os.access(CONFIG_PATH, os.R_OK | os.W_OK):
+        if os.path.isfile(CONFIG_PATH) and os.access(CONFIG_PATH, os.R_OK | os.W_OK): #TODO test if this check needed?
+            EXEC_MODE = EXEC_MODE_UPGRADE
             g_config = helpers_read_config(CONFIG_PATH)
-            EXEC_MODE = EXEC_MODE_REGISTRATION
             ok = True
     else:
-        # Read from /var/configuraitons/
-        if os.path.isfile(OPERATION_CONFIG_FILE_PATH) and os.access(OPERATION_CONFIG_FILE_PATH, os.R_OK):
-            g_config = helpers_read_config(OPERATION_CONFIG_FILE_PATH) 
+        if EXEC_MODE_UPDATE_KEY in arguments:   # ---------- update
+            EXEC_MODE = EXEC_MODE_UPGRADE
+            print(f"CloudSync starting in {EXEC_MODE} mode")
+            print("CloudSync update config started...")
+            # Update the $HOME from /var/configuraitons/ and update result in both for later update
+            oldConfig = helpers_read_config(OPERATION_CONFIG_FILE_PATH)
+            newConfig = helpers_read_config(CONFIG_PATH)
+            newConfig . update (oldConfig)
+            helpers_write_config(None                 , CONFIG_PATH               , newConfig)
+            helpers_write_config(OPERATION_CONFIG_PATH, OPERATION_CONFIG_FILE_PATH, newConfig)
+            print("CloudSync update config done.")
+
+        # Read from /var/configuraitons/        # ---------- normal
+        if os.path.isfile(OPERATION_CONFIG_FILE_PATH) and os.access(OPERATION_CONFIG_FILE_PATH, os.R_OK): #TODO test if this check needed?
+            g_config = helpers_read_config(OPERATION_CONFIG_FILE_PATH)
             CONFIG_PATH = OPERATION_CONFIG_FILE_PATH
             ok = True
 
     if ok:
-        print("CloudSync started in {0} mode".format(EXEC_MODE))
-        print("Using config: ".format(CONFIG_PATH))
+        print(f"CloudSync started in {EXEC_MODE} mode")
+        print(f"Using config: {CONFIG_PATH}")
     else:
-        g_utils.logger.error("Error reading config file in {0}".format(EXEC_MODE))
-    
+        g_utils.logger.error(f"Error reading config file in {EXEC_MODE}")
+
     print(SETUP_CONSOLE_LINE)
 
 except Exception as e:
-    g_utils.logger.error("Error reading config file - {0}".format(e))
+    g_utils.logger.error(f"Error reading config file - {e}")
     print(SETUP_CONSOLE_LINE)
     sys.exit(0)