Is this revision UHD compatible? BP50NB40 NB50 (Rev 1.01, Oct 2025) - No LibreDrive Information shown in MakeMKV.

[Zombiciego]

Hi again Zombiciego,

Thank you for this.

Also, is there any recommended way to back up the original Buffalo firmware before flashing? or this is not necessary/possible?

You could try but I believe there would be no point. It is extremely likely your firmware is indeed encrypted, so only a non-flashable user data area would get dumped.

Before I continue, do you think I should simply follow your flashing guide exactly as written for this drive, or would you recommend checking or changing anything else first?

You can proceed. Try flashing DE_LG_WH16NS60_1.02_MK.bin with a regular WRITE with encryption, it should work on your first try. Again, no bootloader flash nor RECOVER.

Also, feel free to post the BRXL-PUS6U3B-TAA information whenever you are ready.

EDIT : And I can confirm that DE_LG_WH16NS60_1.02_MK.bin likely won't work with DVDFab, so you will probably need to use the slim drive with the correct firmware when it comes to this software.

SUCCESS! The firmware flashing process worked and my desktop drive was able to perform a complete backup of a UHD disk without any issues, and very quickly and silently! Thank you so much!


I have now gathered the MakeMKV info from the SLIM drive:

Model:
BRXL-PUS6U3B-TU

Información de unidad de disco
Nombre del SO del dispositivo: E:
Fabricante: BUFFALO
Producto: Optical Drive
Revisión: BN14
Número de serie: MZFQ1HJ4150
Fecha del firmware: 2121-06-21 13:33
Marcas de cifrado bus: 1F
Highest AACS version: 76

LibreDrive Information
Status: Possible, not yet enabled
Drive platform: MT1959


Additional information from SDFTool Flasher:
E: BUFFALO_Optical_Drive_BN14_212106211333_MZFQ1HJ4150

MT1959 Platform: detected (green check)
Encrypted Firmware: detected (green check)
"Include boot loader?" is unchecked.

Behavior is identical to the desktop drive before flashing:
Regular Blu-rays are detected and read correctly.
UHD discs spin up but are never detected.
Windows also doesn't recognize an inserted UHD disc.


Just in case, could you please confirm the firmware from Marty's pack that I should use for this slim model?

EDIT: Regarding the firmware compatibility with the DVDFab player, I would like to have at least one of the drives capable of playing UHD BR directly from the disc if possible. Just in case I need it in the future.

Thank you again!

[Sayaka]

SUCCESS! The firmware flashing process worked and my desktop drive was able to perform a complete backup of a UHD disk without any issues, and very quickly and silently! Thank you so much!

You're welcome !

Just in case, could you please confirm the firmware from Marty's pack that I should use for this slim model?

Sure thing !

The lower drop-down menu will allow you to select the firmware. For the BRXL-PUS6U3B-TAA, select DE_LG_BU40N_1.03_MK.bin from the Slim External Drives folder inside Marty's All You Need Firmware Pack. (EDIT : Also, please make sure there is no disc inside the drive before you begin flashing.) When you are ready, click on START. Wait until SDFTool Flasher says "Ready" again and *do not unplug the drive during the flashing process*.

After each flash, close SDFtool Flasher, and unplug the drive and leave it unplugged for a minute. Then plug it back in, and check the MakeMKV information to make sure the flash succeeded.

For the second flash for the same drive (for DVDFab compatibility), the process is the same except encryption is not needed and the correct firmware is DE_LG_BU40N_1.00.bin from the Slim External Drives folder.

So basically it's :

0) Eject the disc and remove it if there is one, then close the tray,
1) Flash DE_LG_BU40N_1.03_MK.bin with encryption with a regular WRITE (no bootloader, no RECOVER),
2) Unplug the drive and wait one minute (30 seconds should be enough though, I just said "one minute" to be 100% on the safe side in case you didn't have a nearby way to measure the elapsed time)
3) Check with MakeMKV that the flash was successful,
4) If it was, flash DE_LG_BU40N_1.00.bin without encryption with WRITE - again, no bootloader, no RECOVER (this firmware is *probably* slightly less efficient for some Blu-rays but it has DVDFab compatibility)
5) Unplug the drive and wait one minute,
6) Check with MakeMKV that the flash was successful,
7) If it was, please enjoy having LibreDrive, ripping UHD Blu-rays and using DVDFab/PlayerFab.

That's what I did for the non-TAA variant and it worked like a charm. The BN14 firmware was exactly the same, too, so I 99.99999999999% expect this to succeed without any issues.

Also please make sure the drive has enough power, if you connect it to a laptop please don't be afraid to use the USB-A to USB-C adapter that should hopefully be with the drive.