A most pleasing albeit unexpected result. Well done kunix for the insight, and pgardella for following his advices so trustingly and precisely. Another trick worth trying before 'end-game'....

In summary kunix, is this understanding correct?: His unit couldn't flash fw_all.bin using the boot.bin in full firmware, but following successfully flashing boot.bin solely a copy of bootloader was properly retained, which in turn was found to flash fw_all.bin alone.

Thread marked as Solved. WOW indeed.