So, this board had weird issues for a while (no resume from suspend, broken boot entries in linux) and overall weird behavior. I tried to fix it by mass flashing newer/old bioses and seeing if it worked.
It pretty much did not. I started getting annoyed and flashed a 32MB bios's nvram partition (latest bios) while being on an older, 16MB bios. Mostly because afuefi is broken on this board and the bios appears to be 16MB even though the CAPs are 32... anyway.
That caused this beautiful CrashFree3 recovery screen:
I looked around and found little to no info on how it actually works. ASUS support was not helpful at all and just linked generic instructions that I would bet were written in 1998.
Eventually I found a video from a guy with an ASUS B350 whatever and he got it to work by putting the usb on a specific port and using a specific bios version.
The only issue is that it doesn't recognize any BIOS file, on USB drive, on any port, the bios in DVD drive or even the BIOS on an HDD. I've tried literally everything (100+ permutations or something like that) and it just hangs on that flashing cursor.
A fun fact is that having a nvme drive in the first slot will cause the screen to get corrupted.
Has anyone ever got this to work on this board?