Don't expect anything good. On my system, which used to have perfect fan behavior on 0205, after it got flashed to 0206 by Asus, returning to 0205 didn't restore the original 0205 behavior. Now it's possible that Asus actually changed something else hardware-wise, and that's why going back to 0205 didn't work, but I doubt it. None of the work orders on that trip mentioned anything about actual hardware replacements. Of course now I'm on a new motherboard, and it definitely doesn't behave well on 203 or 205. I think they've had a few motherboard revisions since the line was introduced, and an earlier BIOS just won't properly run a newer board.