www.makemkv.com

Hi everyone,

I have an external 4k BD drive that I'd like to get "Libre-drived" but I want to make sure I'm doing this right before I brick it! Here are the drive details:

Drive Information
OS device name: F:
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU50N
Revision: GE03
Serial number: ***********
Firmware date: 2118-01-22 14:36
Bus encryption flags: 1F
Highest AACS version: 61

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

I have downloaded the SDF Flash Tool v1.3.5
I have downloaded mk-firmware-pack-20200720 and can see the MK file for the BU50N in there
I have the originally generated tar file as that seems to have been useful on other posts: https://drive.google.com/drive/folders/ ... sp=sharing

From what I've read, I should now select my drive, choose WRITE, select the MK FW File and go for it?

Thanks!

glorifieduk wrote: ↑

Fri Aug 23, 2024 4:23 pm

Hi everyone,

I have an external 4k BD drive that I'd like to get "Libre-drived" but I want to make sure I'm doing this right before I brick it! Here are the drive details:

Drive Information
OS device name: F:
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU50N
Revision: GE03
Serial number: ***********
Firmware date: 2118-01-22 14:36
Bus encryption flags: 1F
Highest AACS version: 61

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

I have downloaded the SDF Flash Tool v1.3.5
I have downloaded mk-firmware-pack-20200720 and can see the MK file for the BU50N in there
I have the originally generated tar file as that seems to have been useful on other posts: https://drive.google.com/drive/folders/ ... sp=sharing

From what I've read, I should now select my drive, choose WRITE, select the MK FW File and go for it?

Thanks!

Yep

Beautiful! Worked a treat and dead easy. Thanks

I have the same drive, took the same steps and everything looked good. However all my attempts to make an mkv have failed so far. I suspect the drive itself is faulty so I would like to recover the original firmware so I can return the device. Unfortunately although I did use the read option first that seems to only have the user data and I can't find the original firmware to download anywhere. Any help appreciated!

Post your MakeMKV drive information.

Drive Information
OS device name: F:
Manufacturer: HL-DT-ST
Product: BD-RE BU50N
Revision: 1.00
Serial number: MZZJ2ID3041
Firmware date: 2117-11-21 10:06
Bus encryption flags: 17
Highest AACS version: 76

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 1.00
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

tokyojoe wrote: ↑

Mon Apr 14, 2025 10:11 am

Drive Information
OS device name: F:
Manufacturer: HL-DT-ST
Product: BD-RE BU50N
Revision: 1.00
Serial number: MZZJ2ID3041
Firmware date: 2117-11-21 10:06
Bus encryption flags: 17
Highest AACS version: 76

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 1.00
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

try BU40N 1.00

OK....

Drive Information
OS device name: F:
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.00
Serial number: MZZJ2ID3041
Firmware date: 2116-12-20 15:28
Bus encryption flags: 17
Highest AACS version: 76

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Original (unpatched)
Firmware version: 1.00
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

But now stuck at Decrypting (parsing file /AACS/MKB_RO.inf)

Running as admin got me past decrypting but still too many errors to get anywhere... pretty sure it's just a faulty drive at this point (having tried a lot of dvds, blu rays and uhd discs)

How does the mistake you receive express itself? Is an error message from MakeMKV available?

Error 'OS error - {Device Timeout} The specified I/O operation on hs was not completed before the time-out period expired' occurred while reading '/BDMV/STREAM/00077.m2ts' at offset '1916928000'
Error 'Internal error - Operation result is incorrect (78)' occurred while reading '\Device\CdRom0' at offset '1916928000'
Error 'OS error - {Device Timeout} The specified I/O operation on hs was not completed before the time-out period expired' occurred while reading '\Device\CdRom0' at offset '1916928000'
Error 'Internal error - Operation result is incorrect (78)' occurred while reading '\Device\CdRom0' at offset '1916928000'
Error 'OS error - {Device Timeout} The specified I/O operation on hs was not completed before the time-out period expired' occurred while reading '\Device\CdRom0' at offset '1916928000'
Error 'Internal error - Operation result is incorrect (78)' occurred while reading '\Device\CdRom0' at offset '1916928000'

Very strange... I tried a different USB port on the same hub and it worked absolutely fine!

Lack of power from the port that failed?

Billycar11 wrote: ↑

Mon Apr 14, 2025 10:52 am

tokyojoe wrote: ↑

Mon Apr 14, 2025 10:11 am

Drive Information
OS device name: F:
Manufacturer: HL-DT-ST
Product: BD-RE BU50N
Revision: 1.00
Serial number: MZZJ2ID3041
Firmware date: 2117-11-21 10:06
Bus encryption flags: 17
Highest AACS version: 76

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 1.00
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

try BU40N 1.00

Is there any benefits/drawbacks to picking 1 particular firmware over another. I just got myself an LG BP50NB40 that I have crossflashed to "DE_LG_BU40N_1.00.bin". the drive works fine but is there any reason for not crossflashing to "DE_LG_BU40N_1.03_MK.bin"?

pottzman wrote: ↑

Fri Oct 24, 2025 6:54 am

Billycar11 wrote: ↑

Mon Apr 14, 2025 10:52 am

tokyojoe wrote: ↑

Mon Apr 14, 2025 10:11 am

Drive Information
OS device name: F:
Manufacturer: HL-DT-ST
Product: BD-RE BU50N
Revision: 1.00
Serial number: MZZJ2ID3041
Firmware date: 2117-11-21 10:06
Bus encryption flags: 17
Highest AACS version: 76

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 1.00
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

try BU40N 1.00

Is there any benefits/drawbacks to picking 1 particular firmware over another. I just got myself an LG BP50NB40 that I have crossflashed to "DE_LG_BU40N_1.00.bin". the drive works fine but is there any reason for not crossflashing to "DE_LG_BU40N_1.03_MK.bin"?

No benefit leave it as is