To change firmware, you simply program the unit with the version of firmware you want to go to.
My internal Dual-Format DVD ReWritable Drive recently stopped recognizing disks. Whether I try to read or write. It worked faily well until I installed new firmware. I would like to uninstall the firmware but can't figure out how. I tried System Restore but none of the restore dates would work. The Device Manager says that it is working properly. But whenever I put a disk into it, it prompts me to insert a disk. Any suggestions??