Firmware — Bu40n 1.00

In the manufacturing timeline, version 1.00 (sometimes labeled simply as "1.00" or "1.0") is typically the Release to Manufacturing (RTM) code. This is the software flashed onto the drive at the factory before it is shipped to retailers.

Key Characteristics of 1.00:

The BU40N holds a specific place in the enthusiast community (notably on forums like MyCE or VideoHelp) because of its potential for customization. The 1.00 firmware is often the target for modification. bu40n 1.00 firmware

Enthusiasts often seek "unlocked" or "modded" firmware based on version 1.00 for two primary reasons: In the manufacturing timeline, version 1

Yes, but with caveats. While newer drives like the LG WH16NS60 or Pioneer BDR-S13 exist, the BU40N remains the best slim option for UHD ripping. However, finding a drive that can accept 1.00 is getting harder. However, finding a drive that can accept 1

Using specific command-line versions of the flasher (sdftool), you can force a downgrade even from 1.05. However, this requires entering a "safe mode" via a hardware short (jumping two pins on the flash ROM). This is not recommended for anyone without soldering experience.

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.