Bu40n 1.00 Firmware -
Disclaimer: Firmware modification is done at your own risk. Always check the latest, reliable sources like MakeMKV forums for the most up-to-date procedures. If you'd like, I can:
The standard GUI-based utility used to write firmware to these drives.
Yes, provided the enclosure uses a standard SATA-to-USB bridge (e.g., Vantec, OWC, or the stock Buffalo enclosure). Some cheap enclosures with odd chipsets may cause communication errors during flash. If possible, connect the bare drive to a SATA port on your motherboard for the flashing process.
Most modern Blu-ray drives ship with firmware that imposes strict protections. This is where comes in. It's a feature built into MakeMKV that bypasses these protections, granting the drive "unrestricted read speed" and the ability to read raw data from discs..
Downgrading or cross-flashing your LG BU40N to version 1.00 unlocks the full potential of your hardware. 1. 4K UHD Blu-ray Ripping bu40n 1.00 firmware
: Version 1.00 is an official Ultra HD Blu-ray certified firmware. Newer stock firmware versions often remove support for direct 4K playback in licensed software like CyberLink PowerDVD Reliability
Newer firmware revokes the drive's ability to read raw 4K data blocks via third-party software.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
You forgot to tick the "Encrypted" checkbox. Re-run the flasher with that box checked. Disclaimer: Firmware modification is done at your own risk
Open MakeMKV. Look at the "Drive Information" panel. Note the "Firmware version." If it is 1.00, you are done. If it is higher (e.g., 1.03 or 1.14), proceed.
If your LG BU40N reports in MakeMKV, you have a golden drive . Never update it. It will handle 4K UHD ripping better than almost any other slim drive on the market.
If it reads 1.00 , your drive is already optimized for UHD ripping. If it reads a higher number, you must downgrade it. The Cross-Flashing Phenomenon: BU40N vs. NS60
: Community stress tests have shown that while newer versions like 1.04 are often "rubbish" and prone to errors, 1.00 remains stable for long-term use. Burning Support Yes, provided the enclosure uses a standard SATA-to-USB
Drives with 1.00 firmware are ready to rip straight out of the box, whereas newer drives often require "cross-flashing" or patching to downgrade the firmware to a usable state.
| Property | Value | |----------|-------| | Drive platform | MT1959 (Supports LibreDrive) | | Bus encryption | Present but removable via firmware | | Sleep bug | No (introduced in later firmware) | | UHD out-of-box | Yes (if manufactured before mid-2018) |
Before diving into the specifics of version 1.00, let's establish the hardware. The LG BU40N is a slim, 9.5mm slot-loading or tray-loading Blu-ray writer. It is commonly found in high-end laptops (such as older Alienware or Dell XPS models), external USB enclosures (like the Buffalo BRXL-PU3), and custom home theater PCs (HTPCs).
Furthermore, newer drives manufactured after 2021 may ship with "SVC Code NS60" or encrypted firmware that is currently impossible to downgrade using standard methods.
It's important to understand where 1.00 fits in the lineup of available firmwares for the BU40N:
If you are using a drive for MKV ripping with MakeMKV , the firmware version dictates functionality.
