I need some direction for an odd situation (bios flash)

[Toonage]

Howdy all.....recently while doing a workstation build I put in a floppy that I thought was an driver disk, but it was a disk that had a 5950Ultra bios on it that I'd modded my 5900U with. It executed automaticly (odd to me) and crammed the poor little gf4 ti4200 that was in the machine with that Big Daddy Ultra bios. Needless to say its black screen now. I've tried changing bios initfirst setting to PCI, booting off an extra PCI card and executing the flash utility with the 4200 in the AGP slot, but the utility can't find the card. Even tried the same thing and switched the cable to the 4200 before executing with a black screen. No go on either count. Its not a huge loss, but I hate to see a potentially fixable piece of hardware go to waste. Do I have any options here, or have I created a little purple pcb'd monument to stupidity?