I have backed up my own copies of NFL Fever '04, and Tiger Woods '04. I have x2 4977 256k bios. I have been told that this bios works with the downloaded versions. Is there any 256k bios that will play these games? I have a chameleon so i can go to 512 if absolutely necessary. I have tried patching the games and nothing seems to work (Fever boots then freezes, Tiger doesnt boot)

Any help would be great.