Hi! since Intel removed the original BIOS from their intel motherboards and the flashing tool I figured it maybe would be appreciated if there were some backup of it online so people can flash back to bios stock if necessary, so by chance I found the BIOS I've downloaded a few months ago from the intel page. It's the latest BIOS for DG31PR (PRG311H.86A.0071) along with the flashing tool provided by them. With these files I've also included the microcode patcher provided by @DeathBringer because it was helpfull for me, I Hope he's ok with this. if not I can reupload only the stock bios if moderators consider it to be helpfull.
Martín X.
Martín X.