Need Help Identifying Platform for HL-DT-ST BP55EB40-EB52 Blu-ray Drive

[xavierxyp]

Hello!

I recently bought a nearly new Blu-ray drive from a local reseller: HL-DT-ST BP55EB40, SVC Code: EB52.
When I connected it to MakeMKV, it didn’t show any LibreDrive information. I also tried SDFtoolFlasher, which reported that the drive isn’t based on the MT1959 platform.
I’m a bit puzzled. Is there a way to determine the platform this drive uses without disassemble it?

Any guidance or tips would be greatly appreciated—thanks in advance!

Ref: https://forum.makemkv.com/forum/viewtopic.php?t=37876

Information from MakeMKV v1.18.1:
Drive Information
OS device name: [REDACTED]
Current profile: CD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BP55EB40
Revision: 1.02
Serial number: WQ94 [REDACTED]
Bus encryption flags: 1B
Highest AACS version: 71

Label in drive:
Manufactured: 2025.05.06 (May 2025)
ROM VER: 1.03

[MartyMcNuts]

Hello!

I recently bought a nearly new Blu-ray drive from a local reseller: HL-DT-ST BP55EB40, SVC Code: EB52.
When I connected it to MakeMKV, it didn’t show any LibreDrive information. I also tried SDFtoolFlasher, which reported that the drive isn’t based on the MT1959 platform.
I’m a bit puzzled. Is there a way to determine the platform this drive uses without disassemble it?

Any guidance or tips would be greatly appreciated—thanks in advance!

Ref: viewtopic.php?t=37876

Information from MakeMKV v1.18.1:
Drive Information
OS device name: [REDACTED]
Current profile: CD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BP55EB40
Revision: 1.02
Serial number: WQ94 [REDACTED]
Bus encryption flags: 1B
Highest AACS version: 71

Label in drive:
Manufactured: 2025.05.06 (May 2025)
ROM VER: 1.03

It uses the MT1959 drive platform. Post the libredrive info section, which should be below the drive info section.

[Ezatoka]

maybe take out the CD-ROM which seem to be in the drive and keep the drive empty while looking up the info on MakeMKV

[xavierxyp]

It uses the MT1959 drive platform. Post the libredrive info section, which should be below the drive info section.

Thanks for the reply!
I’m still a bit confused though, since I don't see any additional information under the drive info section.
Did I possibly miss a step?



I’m also starting to wonder if there might be a mismatch somewhere, maybe it's just a labeling or firmware issue, or perhaps the actual hardware isn't exactly what the seller listed.
Is there any reliable way to verify the real hardware model without physically opening the drive?

[MartyMcNuts]

It uses the MT1959 drive platform. Post the libredrive info section, which should be below the drive info section.

Thanks for the reply!
I’m still a bit confused though, since I don't see any additional information under the drive info section.
Did I possibly miss a step?



I’m also starting to wonder if there might be a mismatch somewhere, maybe it's just a labeling or firmware issue, or perhaps the actual hardware isn't exactly what the seller listed.
Is there any reliable way to verify the real hardware model without physically opening the drive?

Down the right hand side, should look similar to this:

Drive Information
OS device name: H:
Manufacturer: PIONEER
Product: BD-RW BDR-S12U
Revision: 1.00
Serial number: **REDACTED**
Firmware date: 2019-01-10
Bus encryption flags: 1B
Highest AACS version: 82

LibreDrive Information
Status: Enabled
Drive platform: RS8F01
Firmware name: PIONEER BDR-212T
Firmware type: Original (unpatched)
Firmware version: 1.00/ID43
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

No disc inserted

As you can see, there is the Drive Info and LibreDrive Info sections. Your drive should show MT1959 under drive platform.

If the Libredrive section is not showing, close MakeMKV, insert a blu-ray disc in to the drive, wait until Windows has initialised the disc (you can see it in windows explorer) then open up MakeMKV. Hopefully once MakeMKV sees the disc, it will show these sections.

[xavierxyp]

If the Libredrive section is not showing, close MakeMKV, insert a blu-ray disc in to the drive, wait until Windows has initialised the disc (you can see it in windows explorer) then open up MakeMKV. Hopefully once MakeMKV sees the disc, it will show these sections.

Thanks for the suggestion.
I tried, but unfortunately the LibreDrive section still doesn’t show up. Here's a screenshot of what I see below: https://imgur.com/a/R0aTmPE

[MartyMcNuts]

If the Libredrive section is not showing, close MakeMKV, insert a blu-ray disc in to the drive, wait until Windows has initialised the disc (you can see it in windows explorer) then open up MakeMKV. Hopefully once MakeMKV sees the disc, it will show these sections.

Thanks for the suggestion.
I tried, but unfortunately the LibreDrive section still doesn’t show up. Here's a screenshot of what I see below: https://imgur.com/a/R0aTmPE

Does MakeMKV have internet access? In preferences, ensure the box is checked.

[xavierxyp]

Does MakeMKV have internet access? In preferences, ensure the box is checked.

Yes, I've check about that. Unfortunately, the LibreDrive section still doesn't appear, even with that setting enabled.

Here's a snippet from the debug log:

Code: Select all

Debug log started at Wed Sep 10 16:12:02 2025 , written by MakeMKV v1.18.1 win(x64-release)
001005:0000 MakeMKV v1.18.1 win(x64-release) started
001004:0000 Debug logging enabled, log will be saved as file://C:\Users\<REDACTED>/MakeMKV_log_1.txt
Using 262272KB for read cache.
Network access is ENABLED, CURL version 7.72.0/Schannel/1.41.0 (x86_64-pc-win32) , proxy server not set.
001003:0020 DEBUG: Code 0 at 2g`y)1d*msr{}#Bb:121276424
No  SDF v097: HL-DT-ST_BD-RE_BP55EB40_1.02_WQ94_<REDACTED>
No auto SDF v097: HL-DT-ST_BD-RE_BP55EB40_1.02_WQ94_<REDACTED>
DEBUG: Code 0 at \c^YLv PcaLdd\XsJ:29396253
DEBUG: Code 0 at e!/TsMgD>)UEE`0S:213136746
No  SDF v097: HL-DT-ST_BD-RE_BP55EB40_1.02_WQ94_<REDACTED>
DEBUG: Code 3 at u%~+41nw7Z$>\(rT@7Hdjpjz:29395310
SDF id v097: HL-DT-ST_BD-RE_BP55EB40_1.02_WQ94_<REDACTED>
Application exited at Sat Sep 13 06:06:57 2025

[Ezatoka]

Is that drive connected internally or in an external enclosure?

If internally, can you try to use a different SATA cable? Or at least check, if the cables are connected correctly?

If external, what kind of enclosure is it?

[MartyMcNuts]

Is that drive connected internally or in an external enclosure?

If internally, can you try to use a different SATA cable? Or at least check, if the cables are connected correctly?

If external, what kind of enclosure is it?

It's a BP55EB40, essentially the same as the BP50NB40. It has it's own enclosure.

[xavierxyp]

Information from MakeMKV v1.18.1:
Drive Information
OS device name: [REDACTED]
Current profile: CD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BP55EB40
Revision: 1.02
Serial number: WQ94 [REDACTED]
Bus encryption flags: 1B
Highest AACS version: 71

Label in drive:
Manufactured: 2025.05.06 (May 2025)
ROM VER: 1.03

I also tried on another ARM64 Mac, but still no luck the LibreDrive section doesn’t show up in the GUI.
Then I tried `makemkvcon64.exe` in Windows:

Code: Select all

PS > .\makemkvcon64.exe f -vvv -d H: --sdf-file=<REDACTED>\sdf.bin --info
Found sdf.bin version 0x98 at <REDACTED>\sdf.bin
Loaded SDF.bin version 0x98
No drive-specific logic found in SDF.bin
SDF.bin version: 0x0098

Drive Tool SDF not present

Drive Specific SDF not present

Identification SDF present

Any further suggestions on what I could try next?

[Billycar11]

Information from MakeMKV v1.18.1:
Drive Information
OS device name: [REDACTED]
Current profile: CD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BP55EB40
Revision: 1.02
Serial number: WQ94 [REDACTED]
Bus encryption flags: 1B
Highest AACS version: 71

Label in drive:
Manufactured: 2025.05.06 (May 2025)
ROM VER: 1.03

I also tried on another ARM64 Mac, but still no luck the LibreDrive section doesn’t show up in the GUI.
Then I tried `makemkvcon64.exe` in Windows:

Code: Select all

PS > .\makemkvcon64.exe f -vvv -d H: --sdf-file=<REDACTED>\sdf.bin --info
Found sdf.bin version 0x98 at <REDACTED>\sdf.bin
Loaded SDF.bin version 0x98
No drive-specific logic found in SDF.bin
SDF.bin version: 0x0098

Drive Tool SDF not present

Drive Specific SDF not present

Identification SDF present

Any further suggestions on what I could try next?

Yours is the Chinese variant it's not flashable