what model is your motherboard ?
you can buy replacement bios chips already flashed for the version of the bios you were trying to upgrade to
you can find several vendors on ebay >>>>> just search bios chip
or look here
http://www.biosman.com/extraction.html
http://www.bioschip.com/remove_dip.html
once you tell us what motherboard you have I will check to see which bios chip you have; I would expect Dipp