@Rikk: you didn't understand RPC9's question.
@RPC9: the hexes you have are the firmware, and they need to be flashed into the drive from DOS. But from version 0156, bitsetting for this unit is supported in official firmwares. So all you have to do is downloading the 0157 firmware from here and flash the drive with the Windows utility. Then, to use the bitsetting feature, use the DVDBitSetter Utility just as Rikk describes.