Heres shams unlocked/cold bios
http://www.madshrimps.be/upload/Massman/GTX580/c.rom
Also you can get your own bios modded here
http://forums.guru3d.com/showthread.php?t=329033
if you look at page 31 h made me a evga sc 580 bios with 100% fan and unlocked to 1.21v.
those guys are ok helping all who ask.

nice 03 action napalm