: Connect your laptop to a power source. A power failure during the flash can permanently "brick" the drive.
And remember—if it ain’t broke (yet), some say don’t fix it. But if your UJ240AS is acting up, the right firmware just might breathe new life into an old optical warrior. matshita bdmlt uj240as firmware update
Ensure your laptop’s chipset drivers are current, as the communication between the motherboard and the optical drive often depends on these system-level drivers. : Connect your laptop to a power source