Could not remove directory \usr\Cfg message when upgrading M241/251 firmware
- When upgrading using Controller Assistant and USB cable, error message "Could not remove directory \usr\Cfg" is displayed.
- When upgrading using SD card "Delete "/usr/*" (line 1) returned cleaning error" appears in SCRIPT.log file.
This is because some corrupted files can not be deleted.
To delete these files " Format "/usr" " should be added to SD card script.
In firmwares starting from v4.0.2.52 " Format "/usr" " is added automatically by Controller Assistant when generating SD cards.