Dumb question but did you try the force switch?  Also perhaps all the rest of the bypass checks.


 -f Force flashing regardless of security checking BIOS file info check OR boot-up card

 -fa Force flashing bypassing already-programmed check

 -fm Forec flashing bypassing BIOS memory config check

 -fs Force flashing bypassing BIOS SSID check

 -fp Force flashing bypassing BIOS P/N check