3 chains gone here as well.

Followed all instructions provided by the Bitmain Support page to upgrade to latest firmware with SD flashing, but i wasn't able to flash the E3 somehow even i made it step by step as suggested.

Can someone that managed the flashing through SD card make a guide/tutorial step by step? Pretty sure the Bitmain guide misses something or it would have worked out, not?

Thx in advance.