Hello, I'm having the same problem, just an FYI, I own the MAXIMUS VIII HERO, MAXIMUS VIII HERO ALPHA, and the MAXIMUS VIII FORMULA, I have updated to 3401 on the HERE ALPHA no problems, although I'm having an issue with running command rate of 1T with F4-3600C16D-16GTZR kit as I was able to with BIOS 2202, but no ME FW 0.0.0.0 issue, with my FORMULA I am having the issue with the ME FW 0.0.0.0, I've tried FLASHBACK method and Easy Flash method with no luck, what happens is I do the FLASHBACK and then boot when its done, then it gets stuck at post code 7F, I let it be, it finally allows me to get into the BIOS and inside the BIOS it gives me ME FW 0.0.0.0, also the time it take to get into the BIOS is like 3-5min, and thats everytime I try to boot, I've never booted into Windows obviously cause there is something wrong, I just pulled the SATA cable from the boot drive, I was to get this sorted out first...
I have not yet tried to update the HERO board, I'm still on 2202, I will try tonight, does anyone have any thoughts on why my FORMULA is doing this? I'm also to go back to 2202 and everything works, and before anyway says just leave it alone, I'm a system builder for over 15 years, and I have a 7700K that will be going in it as soon as this gets figured out...