Firmware fails

i got my firmware from codeguys for my Lite-On 851S DVD-+RW. and when i try to update the firmware it gets to 26% and says it failed to update the firmware. plz help. (i updated to GS0K)

checking over the usual suspects…
is ur aspi layer ok? (nero infotool will tell u).
are u using a via or nforce board? use the latest drivers or the M$ ide drivers