From your other thread:
Your drive has OEM firmware. Lite-On retail firmware would not have allowed you to flash it, so there must be another reason for your problem.
A firmware backup can be made with the Flash Utility and an EEPROM backup with the EEPROM Utility, both found on codeguys.rpc1.org . Flashing to the latest retail Lite-On firmware can be done with “YS0Z - stock” from the same site (at your own risk, voids warranty).