I have never tried this but here what I think.....
When you f#!k up the bios... your pretty much screwed... thats the brain of the chip... this is like somebody ripping your brain out and telling you to do something.
If the chip is off/disabled (or as you say you 'killed' it) I highly doubt the flash program would even detect it. Even if it did the corrupt bios would refuse to coperate... err I guess it's off... long story short I very highly doubt it. But hey... I could be wrong.
v7 NTSC PS2 Duo2 SE