I just got my 3.1 roms and i've placed them correctly on the A1200 and i do have the same problem here. It doesn't boot, i've noticed it only happens with the CSA board, bec i do have another miggy with a Bliz IV and it works perfectly.
Even the same miggy boots if i unplug the CSA board. It seems there's no way to have an updated bios for this board. So there has to be some way to make it work with 3.1 roms.
