Heya, just wanted to drop in here as well since the topic itself seems a bit less active.
I’ve got a Gigabyte motherboard that’s stuck with the invalid bios image issue. See here (last post as of current): Flashing Gigabyte while avoiding "Invalid BIOS image" - #401 by chinobino
Apologies if im breaking any rules linking across, I’m new to all this and just so exhausted from this so if anyone here can help i would appreciate it beyond words.