Bu40n 1.00 Firmware Jun 2026

The LG BU40N is an internal 9.5mm slimline Blu-ray writer. It natively supports BDXL formats, M-DISC archiving, and 4K UHD Blu-ray playback. Because of its compact size, it is a favorite choice for custom Home Theater PCs (HTPCs) or for conversion into a portable USB external drive using a slim SATA enclosure. Why is the 1.00 Firmware Version So Important?