BD-RE BU50N firmware flash
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- Posts: 2
- Joined: Fri Aug 23, 2024 3:59 pm
BD-RE BU50N firmware flash
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!
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!
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- Posts: 3272
- Joined: Wed Nov 22, 2017 11:45 pm
Re: BD-RE BU50N firmware flash
Yepglorifieduk wrote: ↑Fri Aug 23, 2024 4:23 pmHi 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!
Cheers
----------------------------------------------------------------------------------------------------------------------------
For UHD enabled drives (AU/NZ/SG + Others) & DIY Single Drive Flasher (WW): https://uhdenableddrives.com

----------------------------------------------------------------------------------------------------------------------------
For UHD enabled drives (AU/NZ/SG + Others) & DIY Single Drive Flasher (WW): https://uhdenableddrives.com
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- Posts: 2
- Joined: Fri Aug 23, 2024 3:59 pm
Re: BD-RE BU50N firmware flash
Beautiful! Worked a treat and dead easy. Thanks 

Re: BD-RE BU50N firmware flash
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!
Re: BD-RE BU50N firmware flash
Post your MakeMKV drive information.
Re: BD-RE BU50N firmware flash
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
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
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- Posts: 4645
- Joined: Sun Aug 24, 2014 5:49 am
Re: BD-RE BU50N firmware flash
try BU40N 1.00tokyojoe wrote: ↑Mon Apr 14, 2025 10:11 amDrive 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
Buy a UHD drive from the guide and how to video maker: https://www.makemkv.com/forum/viewtopic ... 20&t=17831
UHD Drives Guide: https://www.makemkv.com/forum/viewtopic ... 16&t=19634
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UHD Drives Guide: https://www.makemkv.com/forum/viewtopic ... 16&t=19634
Auto flash kit $25 Email me for one Billycar5924@gmail.com
Re: BD-RE BU50N firmware flash
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)
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)
Re: BD-RE BU50N firmware flash
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)
Re: BD-RE BU50N firmware flash
How does the mistake you receive express itself? Is an error message from MakeMKV available?
Re: BD-RE BU50N firmware flash
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'
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'
Re: BD-RE BU50N firmware flash
Very strange... I tried a different USB port on the same hub and it worked absolutely fine!
Re: BD-RE BU50N firmware flash
Lack of power from the port that failed?