Bu40n 1.00 Firmware -

Solution: Ensure you are using MakeMKV v1.17.4 or newer. Also, try removing the disc, closing MakeMKV, and re-opening it. LibreDrive activates on drive detection, not on disc insertion.

Newer firmware versions suffer from an infamous "sleep bug." If the drive sits idle for 20 seconds while reading a UHD disc, it enters a low-power state. To wake it up, MakeMKV must send a reset command, often causing the rip to freeze or fail. BU40N 1.00 firmware does not have this sleep bug. bu40n 1.00 firmware

The LG BU40N is a 9.5mm slim internal SATA Blu-ray writer. It is part of LG’s respected "BU" series, capable of reading and writing BD-R (Blu-ray Recordable), BD-RE (Blu-ray Rewritable), DVDs, and CDs. Because of its slim profile, it became a favorite for users upgrading laptops or building custom external drives using USB enclosures. Solution: Ensure you are using MakeMKV v1

Unlike "half-height" desktop drives which often offer faster write speeds and better cooling, slim drives are engineered for power efficiency and space-saving. Consequently, the firmware controlling these drives must be precisely tuned to manage laser power output within tight thermal constraints. Newer firmware versions suffer from an infamous "sleep bug