Bu40n 1.00 Firmware Today

As LG updated the BU40N, they began implementing "encrypted" firmware. If your drive arrived with version 1.03 or higher, it likely became much harder to "flash" (re-write) the firmware back to the 1.00 state.

: Unlike newer "MK" (MakeMKV) patched versions, the original BU40N 1.00 Go to product viewer dialog for this item. bu40n 1.00 firmware

: Unlike "MK" (MakeMKV-specific) modified firmwares which are primarily optimized for As LG updated the BU40N, they began implementing

If you own an LG BU40N slim internal Blu-ray drive, you have likely stumbled upon warnings not to update your firmware. You may have seen cryptic references to "SVC code NS50" or "flashing to 1.00." This article is the definitive resource for understanding what this firmware version is, why it is the "Holy Grail" for ripping 4K UHD discs, and exactly how to use it safely. Cross-flash to BU40N 1

Flash to an "unlocked" version (like 1.03-MK) first if the drive has newer factory protection. Cross-flash to BU40N 1.00 to finalize the UHD setup. ⚠️ Critical Warnings