you have the right flashbios.
if you are fragging, then it's a bad install ,bad x3 bios flash or bad dip switch settings.
check all your soldering very close. if everything seems to be ok, then reflash with the latest x3 bios (1959).
also make sure that your dip switches are set correctly. ( banks 1-4 = on, on, off, off, off. )