Sorry to hear your having problems...
Can't you flash it again but with the old bios? Which by the way you should always make a copy of when asked but I guess it's easy to wise after the event.
I had a similar problem a while ago. Gigabyte had a new bios up for my old board ( or so I thought) so I flashed the bios with the new update and nothing... Eventually I got the old bios back working again but more by luck than design... So I thought well I must have done it wrong some how and tried to flash again... This time the board was well and truly dead and so i upgraded a few months early lol.