Could not remove directory \usr\Cfg message when upgrading M241/251 firmware

How can we help you today?

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.