What a horrible situation to be in.
I'd hate to have to bios flash a video card like that.
Oh, and before anyone says "lol dude itz eesy", I've flashed many video cards before. Most of them were worth less than £20 at the time, and flashing was wise because the performance gains to be had were real and it outwieghed the cost of the card. But I tried to flash a radeon 4890 once, when that card was worth about £160, and I couldn't for the life in me get the bios to take and it became a brick.
If I had a card with a bios that was absolute garbage, I'd sell it, then get the same one that did have a proper bios. Even if it cost me £15-20 to swap them.