Download and install (the industry-standard tool for disc backups). Insert your LG BU40N drive into your computer system. Open MakeMKV and look at the right-hand information panel. Locate the line labeled Firmware version .
If it reads 1.00 , your drive is already in its most desirable state and requires no changes. If it reads 1.01 , 1.02 , or higher, your drive's advanced reading capabilities are currently locked. Cross-Flashing and Downgrading to 1.00
: Using the wrong tool or flashing in the wrong order can render the drive unresponsive.
The is highly sought after by home media enthusiasts because it is a "UHD-friendly" firmware that enables LibreDrive functionality in MakeMKV .