Ultimate UHD Drives Flashing Guide Updated 2025

Forum for discussions about UHD-capable dives
Billycar11
Posts: 4831
Joined: Sun Aug 24, 2014 5:49 am

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by Billycar11 » Sat Jul 12, 2025 9:58 pm

Aggies92 wrote:
Sat Jul 12, 2025 2:02 pm
I think I've followed the instructions and it appears everything is kosher, but I'm still getting the following error:
Can't read AACS VID from disc - most likely current AACS host certificate is revoked by your drive
Saved AACS dump file as D:/Movies/MKB20_v76_Top_Gun-_Maverick_609F.tgz
LibreDrive compatible drive is required to open this disc - video can't be decrypted.
Failed to open disc
Here is my MakeMKV Info:
Drive Information
OS device name: \Device\CdRom1
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BP60NB10
Revision: 1.02
Serial number: SIM04P4FG1119
Firmware date: 2120-05-07 09:35
Bus encryption flags: 17
Highest AACS version: 76

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 1.02
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

Disc Information
Label: TOP_GUN_MAVERICK
Timestamp: 2022-08-18 10:22:47
Protection: AACS2.0/C v76
Data capacity: 90.20 Gb
Disc type: BD-ROM UHD
Number of layers: 3
Bus encryption flags: 80
I've tried several different discs, all with the same results. I have internet enabled in the settings and am running as an administrator.

Any help or tips would be greatly appreciated!
You likely have a sdf/key download issue try a vpn
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
Auto flash kit $25 Email me for one Billycar5924@gmail.com

djdeity
Posts: 5
Joined: Sun Jul 20, 2025 12:26 am

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by djdeity » Sun Jul 20, 2025 4:44 am

I'm having issues flashing my drive to handle UHD discs as well. Here's my drive according to MakeMKV 1.8.1 (paid):

Drive Information
OS device name: \Device\CdRom0
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.01
Serial number:
Firmware date: 2119-10-16 10:32
Bus encryption flags: 1F
Highest AACS version: 81

LibreDrive Information
Status: Possible (with patched firmware)
Drive platform: MT1959
Harware support: Yes
Firmware support: No
Firmware type: Original (patched version available)
Firmware version: 1.01
DVD all regions: Possible (with patched firmware)
BD raw data read: Possible (with patched firmware)
BD raw metadata read: Possible (with patched firmware)
Unrestricted read speed: Possible (with patched firmware)

I followed the instructions on the YouTube video, and here's where I got w/ PowerShell:

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

Try the new cross-platform PowerShell https://aka.ms/pscore6

PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> cd..
PS C:\WINDOWS> cd..
PS C:\> cd C:\Program Files (x86)\MakeMKV
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:22
+ cd C:\Program Files (x86)\MakeMKV
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> program files (x86)
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:16
+ program files (x86)
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> cd "C:\Program Files (x86)\MakeMKV"
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try
again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the
path is correct and try again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV>

---------------------------------------------------------------------------------------------------------------------

No matter what I did, PowerShell tells me the C: drive didn't exist when I tried to flash. I'm a bit of a noob myself, but I thought I followed everything perfectly. Appreciate your help.

dcoke22
Posts: 3814
Joined: Wed Jul 22, 2020 11:25 pm

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by dcoke22 » Sun Jul 20, 2025 12:59 pm

djdeity wrote:
Sun Jul 20, 2025 4:44 am
I'm having issues flashing my drive to handle UHD discs as well. Here's my drive according to MakeMKV 1.8.1 (paid):

Drive Information
OS device name: \Device\CdRom0
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.01
Serial number:
Firmware date: 2119-10-16 10:32
Bus encryption flags: 1F
Highest AACS version: 81

LibreDrive Information
Status: Possible (with patched firmware)
Drive platform: MT1959
Harware support: Yes
Firmware support: No
Firmware type: Original (patched version available)
Firmware version: 1.01
DVD all regions: Possible (with patched firmware)
BD raw data read: Possible (with patched firmware)
BD raw metadata read: Possible (with patched firmware)
Unrestricted read speed: Possible (with patched firmware)

I followed the instructions on the YouTube video, and here's where I got w/ PowerShell:

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

Try the new cross-platform PowerShell https://aka.ms/pscore6

PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> cd..
PS C:\WINDOWS> cd..
PS C:\> cd C:\Program Files (x86)\MakeMKV
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:22
+ cd C:\Program Files (x86)\MakeMKV
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> program files (x86)
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:16
+ program files (x86)
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> cd "C:\Program Files (x86)\MakeMKV"
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try
again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the
path is correct and try again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV>

---------------------------------------------------------------------------------------------------------------------

No matter what I did, PowerShell tells me the C: drive didn't exist when I tried to flash. I'm a bit of a noob myself, but I thought I followed everything perfectly. Appreciate your help.
When most people flash LG based drives like yours, they use the SDFtool Flasher and follow the instructions in the Ultimate UHD Drives Flashing Guide, which on your BU40N are "BU40N on any Firmware directly to > BU40N 1.03MK"

djdeity
Posts: 5
Joined: Sun Jul 20, 2025 12:26 am

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by djdeity » Sun Jul 20, 2025 6:30 pm

I did try SDFtool Flasher first. When I tried to write the ".bin" file, it ran fine, but didn't update the drive.

Billycar11
Posts: 4831
Joined: Sun Aug 24, 2014 5:49 am

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by Billycar11 » Sun Jul 20, 2025 8:37 pm

djdeity wrote:
Sun Jul 20, 2025 4:44 am
I'm having issues flashing my drive to handle UHD discs as well. Here's my drive according to MakeMKV 1.8.1 (paid):

Drive Information
OS device name: \Device\CdRom0
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.01
Serial number:
Firmware date: 2119-10-16 10:32
Bus encryption flags: 1F
Highest AACS version: 81

LibreDrive Information
Status: Possible (with patched firmware)
Drive platform: MT1959
Harware support: Yes
Firmware support: No
Firmware type: Original (patched version available)
Firmware version: 1.01
DVD all regions: Possible (with patched firmware)
BD raw data read: Possible (with patched firmware)
BD raw metadata read: Possible (with patched firmware)
Unrestricted read speed: Possible (with patched firmware)

I followed the instructions on the YouTube video, and here's where I got w/ PowerShell:

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

Try the new cross-platform PowerShell https://aka.ms/pscore6

PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> cd..
PS C:\WINDOWS> cd..
PS C:\> cd C:\Program Files (x86)\MakeMKV
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:22
+ cd C:\Program Files (x86)\MakeMKV
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> program files (x86)
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:16
+ program files (x86)
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> cd "C:\Program Files (x86)\MakeMKV"
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try
again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the
path is correct and try again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV>

---------------------------------------------------------------------------------------------------------------------

No matter what I did, PowerShell tells me the C: drive didn't exist when I tried to flash. I'm a bit of a noob myself, but I thought I followed everything perfectly. Appreciate your help.
Looks like your on a 32 but system trying to use 64 bit stuff
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
Auto flash kit $25 Email me for one Billycar5924@gmail.com

peterchan
Posts: 3
Joined: Mon Jul 21, 2025 8:23 pm

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by peterchan » Mon Jul 21, 2025 8:42 pm

May I ask if my 2nd UHD drive from buffalo BRUHD-PU3, flashable?
Drive Information
OS device name: D:
Manufacturer: BUFFALO
Product: Optical Drive
Revision: BU14
Serial number: MOEN2BI0357
Firmware date: 2121-06-21 13:30
Bus encryption flags: 1F
Highest AACS version: 17

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

No disc inserted
==

THank you very much

wow001
Posts: 2
Joined: Wed Jul 02, 2025 8:11 pm

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by wow001 » Tue Jul 22, 2025 12:22 am

I am trying to downgrade a slim LG BU40N from version 1.04 to 1.03 using a mac.

Drive details:
LG BU40N before.png
LG BU40N before.png (376.13 KiB) Viewed 1231 times
I used the method laid out on page 1
copied the two files "sdf.bin" and "HL-DT-ST-BD-RE_BU40N-1.03-NM00000-211810241934.bin" to the /temp folder.

Opened the terminal and followed the instructions:
terminal window.png
terminal window.png (381.4 KiB) Viewed 1231 times
The terminal window shows that the flash was "Done successfully" but opening the makeMKV application show the drive is still on version 1.04.
LG BU40N after.png
LG BU40N after.png (386.26 KiB) Viewed 1231 times
Does any body know what i have done wrong ?

djdeity
Posts: 5
Joined: Sun Jul 20, 2025 12:26 am

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by djdeity » Tue Jul 22, 2025 12:58 am

I'm more than confident that my CPU is 64 bit. Are you saying this because of the folder I put the .bin file in - I can move it to a different folder. So how can I fix the issue?
Billycar11 wrote:
Sun Jul 20, 2025 8:37 pm
djdeity wrote:
Sun Jul 20, 2025 4:44 am
I'm having issues flashing my drive to handle UHD discs as well. Here's my drive according to MakeMKV 1.8.1 (paid):

Drive Information
OS device name: \Device\CdRom0
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.01
Serial number:
Firmware date: 2119-10-16 10:32
Bus encryption flags: 1F
Highest AACS version: 81

LibreDrive Information
Status: Possible (with patched firmware)
Drive platform: MT1959
Harware support: Yes
Firmware support: No
Firmware type: Original (patched version available)
Firmware version: 1.01
DVD all regions: Possible (with patched firmware)
BD raw data read: Possible (with patched firmware)
BD raw metadata read: Possible (with patched firmware)
Unrestricted read speed: Possible (with patched firmware)

I followed the instructions on the YouTube video, and here's where I got w/ PowerShell:

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

Try the new cross-platform PowerShell https://aka.ms/pscore6

PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> cd..
PS C:\WINDOWS> cd..
PS C:\> cd C:\Program Files (x86)\MakeMKV
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:22
+ cd C:\Program Files (x86)\MakeMKV
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> program files (x86)
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:16
+ program files (x86)
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> cd "C:\Program Files (x86)\MakeMKV"
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try
again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the
path is correct and try again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV>

---------------------------------------------------------------------------------------------------------------------

No matter what I did, PowerShell tells me the C: drive didn't exist when I tried to flash. I'm a bit of a noob myself, but I thought I followed everything perfectly. Appreciate your help.
Looks like your on a 32 but system trying to use 64 bit stuff

d00zah
Posts: 1654
Joined: Mon Jun 06, 2016 8:23 pm

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by d00zah » Tue Jul 22, 2025 1:07 am

wow001 wrote:
Tue Jul 22, 2025 12:22 am
I am trying to downgrade a slim LG BU40N from version 1.04 to 1.03 using a mac.

Drive details:
LG BU40N before.png

I used the method laid out on page 1
copied the two files "sdf.bin" and "HL-DT-ST-BD-RE_BU40N-1.03-NM00000-211810241934.bin" to the /temp folder.

Opened the terminal and followed the instructions:
terminal window.png

The terminal window shows that the flash was "Done successfully" but opening the makeMKV application show the drive is still on version 1.04.

LG BU40N after.png

Does any body know what i have done wrong ?
v1.04 is encrypted FW. Change 'main' to 'enc' in your command.

MartyMcNuts
Posts: 3623
Joined: Wed Nov 22, 2017 11:45 pm

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by MartyMcNuts » Tue Jul 22, 2025 3:23 am

djdeity wrote:
Tue Jul 22, 2025 12:58 am
I'm more than confident that my CPU is 64 bit. Are you saying this because of the folder I put the .bin file in - I can move it to a different folder. So how can I fix the issue?
Billycar11 wrote:
Sun Jul 20, 2025 8:37 pm
djdeity wrote:
Sun Jul 20, 2025 4:44 am
I'm having issues flashing my drive to handle UHD discs as well. Here's my drive according to MakeMKV 1.8.1 (paid):

Drive Information
OS device name: \Device\CdRom0
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.01
Serial number:
Firmware date: 2119-10-16 10:32
Bus encryption flags: 1F
Highest AACS version: 81

LibreDrive Information
Status: Possible (with patched firmware)
Drive platform: MT1959
Harware support: Yes
Firmware support: No
Firmware type: Original (patched version available)
Firmware version: 1.01
DVD all regions: Possible (with patched firmware)
BD raw data read: Possible (with patched firmware)
BD raw metadata read: Possible (with patched firmware)
Unrestricted read speed: Possible (with patched firmware)

I followed the instructions on the YouTube video, and here's where I got w/ PowerShell:

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

Try the new cross-platform PowerShell https://aka.ms/pscore6

PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> c:
PS C:\WINDOWS\system32> cd..
PS C:\WINDOWS> cd..
PS C:\> cd C:\Program Files (x86)\MakeMKV
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:22
+ cd C:\Program Files (x86)\MakeMKV
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> program files (x86)
x86 : The term 'x86' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the
spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:16
+ program files (x86)
+ ~~~
+ CategoryInfo : ObjectNotFound: (x86:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\> cd "C:\Program Files (x86)\MakeMKV"
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try
again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> .\makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found
PS C:\Program Files (x86)\MakeMKV> makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System32\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
makemkvcon64.exe : The term 'makemkvcon64.exe' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the
path is correct and try again.
At line:1 char:1
+ makemkvcon64.exe f --all-yes -d C: rawflash enc -i C:\Windows\System3 ...
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (makemkvcon64.exe:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command makemkvcon64.exe was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If you trust this command, instead type: ".\makemkvcon64.exe". See "get-help about_Command_Precedence" for more details.
PS C:\Program Files (x86)\MakeMKV>

---------------------------------------------------------------------------------------------------------------------

No matter what I did, PowerShell tells me the C: drive didn't exist when I tried to flash. I'm a bit of a noob myself, but I thought I followed everything perfectly. Appreciate your help.
Looks like your on a 32 but system trying to use 64 bit stuff
Your firmware is not encrypted so change enc to main in your command.
Cheers :D
----------------------------------------------------------------------------------------------------------------------------
For UHD enabled drives (AU/NZ/SG + Others) & DIY Single Drive Flasher (WW): https://uhdenableddrives.com

wow001
Posts: 2
Joined: Wed Jul 02, 2025 8:11 pm

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by wow001 » Tue Jul 22, 2025 8:45 am

Thank you d00zah "v1.04 is encrypted FW. Change 'main' to 'enc' in your command." worked

./makemkvcon f -d '/IOBDServices/8ACC6D28' -f /tmp/sdf.bin rawflash enc -i /tmp/HL-DT-ST-BD-RE_BU40N-1.03-NM00000-211810241934.bin

djdeity
Posts: 5
Joined: Sun Jul 20, 2025 12:26 am

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by djdeity » Tue Jul 22, 2025 11:32 pm

MartyMcNuts wrote:
Tue Jul 22, 2025 3:23 am
djdeity wrote:
Tue Jul 22, 2025 12:58 am
I'm more than confident that my CPU is 64 bit. Are you saying this because of the folder I put the .bin file in - I can move it to a different folder. So how can I fix the issue?
Billycar11 wrote:
Sun Jul 20, 2025 8:37 pm

Looks like your on a 32 but system trying to use 64 bit stuff
Your firmware is not encrypted so change enc to main in your command.

Thanks for the response, but now I'm having another problem when I use Command Prompt - see below (NOTE: I moved the .bin file to a separate folder on my D: drive):

C:\Program Files (x86)\MakeMKV>.\makemkvcon64.exe f --all-yes -d C: rawflash main -i D:\MakeMKV\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found

I can't understand why it's coming back saying the C: drive isn't found.

MartyMcNuts
Posts: 3623
Joined: Wed Nov 22, 2017 11:45 pm

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by MartyMcNuts » Wed Jul 23, 2025 12:24 am

djdeity wrote:
Tue Jul 22, 2025 11:32 pm
MartyMcNuts wrote:
Tue Jul 22, 2025 3:23 am
djdeity wrote:
Tue Jul 22, 2025 12:58 am
I'm more than confident that my CPU is 64 bit. Are you saying this because of the folder I put the .bin file in - I can move it to a different folder. So how can I fix the issue?

Your firmware is not encrypted so change enc to main in your command.

Thanks for the response, but now I'm having another problem when I use Command Prompt - see below (NOTE: I moved the .bin file to a separate folder on my D: drive):

C:\Program Files (x86)\MakeMKV>.\makemkvcon64.exe f --all-yes -d C: rawflash main -i D:\MakeMKV\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found

I can't understand why it's coming back saying the C: drive isn't found.
C: is not your optical drive. Change C: to your optical drive letter.

Also, don't use BU40N 1.04-MK. It is crap. Use either BU40N 1.03-MK or BU40N 1.00 if you use other software besides MakeMKV.
Cheers :D
----------------------------------------------------------------------------------------------------------------------------
For UHD enabled drives (AU/NZ/SG + Others) & DIY Single Drive Flasher (WW): https://uhdenableddrives.com

djdeity
Posts: 5
Joined: Sun Jul 20, 2025 12:26 am

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by djdeity » Wed Jul 23, 2025 2:12 am

MartyMcNuts wrote:
Wed Jul 23, 2025 12:24 am
djdeity wrote:
Tue Jul 22, 2025 11:32 pm
MartyMcNuts wrote:
Tue Jul 22, 2025 3:23 am


Your firmware is not encrypted so change enc to main in your command.

Thanks for the response, but now I'm having another problem when I use Command Prompt - see below (NOTE: I moved the .bin file to a separate folder on my D: drive):

C:\Program Files (x86)\MakeMKV>.\makemkvcon64.exe f --all-yes -d C: rawflash main -i D:\MakeMKV\HL-DT-ST-BD-RE_BU40N-1.04-NM00500-212005061142.bin
Drive "C:" not found

I can't understand why it's coming back saying the C: drive isn't found.
C: is not your optical drive. Change C: to your optical drive letter.

Also, don't use BU40N 1.04-MK. It is crap. Use either BU40N 1.03-MK or BU40N 1.00 if you use other software besides MakeMKV.
Thanks for the recommendation on 1.03 - I used that .bin file. I reworked the command, and the flash worked properly. I'm ripping my 4K disc right now to make sure it works. Appreciate your help!

CBannana
Posts: 2
Joined: Thu Jul 24, 2025 2:17 pm

Re: Ultimate UHD Drives Flashing Guide Updated 2025

Post by CBannana » Fri Jul 25, 2025 6:59 pm

I'm pretty new to all of this and having an issue with the firmwear.

I figure I need to get the exact firmwear revision but I cant see to find mine anywhere.

I am using a LG BP60NB10 revision 1.01. In the guide and elsewhere I can see versions 1.00 and 1.02 but not 1.01 to download.

Does anyone have access to that for me to use to flash my drive?

Thanks!

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