BIOS Updates forum

Well i try to hotflash with uniflash, all seem to work ok but i got error when flash... about 50% keep red and say 'error writing'. i don't know what to do now. I just see that on my busted bios (on a asrock 939dual-sata2) is a 4mb rom... and on the backup board it's a 2mb rom... so maybe it's the problem ? someone can help me ? if so i could look for a 4mb board somewhere else

Yes, that makes sense. Since your backup motherboard has address lines up to 2Mb. Therefore it stops at 2Mb (50%).

try motherboard with 4Mb flash.