Ultimate UHD Drives Flashing Guide Updated 2025

[mm13579]

HL-DT-ST BD-RE BU4040N
It had the 1.03 Firmware and worked for everything

[MartyMcNuts]

HL-DT-ST BD-RE BU4040N
It had the 1.03 Firmware and worked for everything

So why would you flash it again with the same firmware? Doesn't make any sense...

[mm13579]

I am just trying to get it to work again as I stated in same PC setup it worked 1 year ago for dvd, Blu ray, UHD. This week nothing worked so I tried flashing it to 1.03, 1.02, 1.01, 1.00 and it said loading disc and it said no disc found in makemkv. I followed the guide in this forum for 1.03mk and it is now working for dvd and Blu ray again. But the issue is I still can't get it to recognize UHD discs as it spins them says loading then disc not found.

So I don't know if I am missing something or if another firmware is needed to make everything work correctly again?

[neo14]

Hi,

I have never flashed any Blu ray optical drive, and I don't want to get a brick, so I prefere to ask before do it. I saw some videos to do it and It seems easy to do it, but can I do It in my optical drive? The model is Asus BW-16D1HT, and the information makemkv give me is this:

Información de unidad de disco
Nombre del SO del dispositivo: D:
Fabricante: ASUS
Producto: BW-16D1HT
Revisión: 3.11
Número de serie: ...
Fecha del firmware: 2120-12-01 17:59
Marcas de cifrado bus: 1F
Highest AACS version: 77

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

Do I need to check another thing before flash it? The optical drive is from Augost of 2023. When I open sdftool, there are two sticks in green in MT1959 and encrypted firmware.
I think I can do it with any problem but I would like to be sure to do it.

Thanks

[trooperdadon87]

...

can someone help me? was it working or still 1.02 ? i dont know why there shows still 1.02 when i open makemkv ?

here is the information:
"
LibreDrive Information
Status: Possible (with patched firmware)
Drive platform: MT1959
Harware support: Yes
Firmware support: No
Firmware type: Original (patched version available)
Firmware version: 1.02
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)

"

Try the SDFtool Flasher & the same FW ( HL-DT-ST-BD-RE_BU40N-1.03-NM00000-211810241934.bin ).

thanks doozah !

i think now it works.

here is the information:

"Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 1.03
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes"


is this now enough to do to read and copy uhd discs or do i have to do something else becaue of some bugs or something?

[d00zah]

...

is this now enough to do to read and copy uhd discs or do i have to do something else becaue of some bugs or something?

Read the UHD FAQ to begin. And occasionally skim the forum... MUCH useful info here, if one takes time to look.

[trooperdadon87]

i mean in the guide there is written:

Sleep Bug:

All UHD Friendly drives have the sleep bug, this is when a UHD disk is left idle in the drive for 2 minutes. Once the drive goes to sleep, the UHD Friendly drive will no longer be able to read the disk without opening and closing the disk tray and will make horrible seeking noises until this is done.

Sleep Bug Fix:

To fix the sleep bug on a UHD Friendly drive flash firmware from an UHD Official drive like WH16NS60 DE 1.00 or 1.01MK 1.02MK 1.03MK



can i ignore this with the patched version 1.03 or do i have to fix?

[d00zah]

To the best of my knowledge, the sleep bug is not present in slim drives. Mostly an annoyance, but if you happen to leave a disc in an idle drive...

And...

Crossflashing Warnings:

1. Don't crossflash desktop drives to slim drives or the other way around
2. ...

[trooperdadon87]

ok so i dont have to do anything, right?

i dont understand whats crossflashing ? and for what i use/need it?

[d00zah]

You are good to go. Enjoy!

[MartyMcNuts]

i mean in the guide there is written:

Sleep Bug:

All UHD Friendly drives have the sleep bug, this is when a UHD disk is left idle in the drive for 2 minutes. Once the drive goes to sleep, the UHD Friendly drive will no longer be able to read the disk without opening and closing the disk tray and will make horrible seeking noises until this is done.

Sleep Bug Fix:

To fix the sleep bug on a UHD Friendly drive flash firmware from an UHD Official drive like WH16NS60 DE 1.00 or 1.01MK 1.02MK 1.03MK



can i ignore this with the patched version 1.03 or do i have to fix?

That is for friendly drives. The BU40N is an official drive, thus no sleep bug. Also, it only effects desktop drives anyway, not slim drives.

[zittrig]

....
i dont understand whats crossflashing ? and for what i use/need it?

First post in this topic says among other things:

"Crossflashing:

1. Changes the drive to act as another and gain most or all of its benefits
2. Can be used to increase a drives ripping speed and fix the sleep bug

Crossflashing Warnings:

1. Don't crossflash desktop drives to slim drives or the other way around
2. In some cases crossflashing an Asus drive to an LG or the other way around you may no longer be able to burn disks-SamuriHL
3. Flashing Official UHD firmware to a UHD Friendly drive will not enable Powerdvd aacs 2 decryption or playback"

[zittrig]

....
i dont understand whats crossflashing ? and for what i use/need it?

First post in this topic says among other things:

"......
Crossflashing:

1. Changes the drive to act as another and gain most or all of its benefits
2. Can be used to increase a drives ripping speed and fix the sleep bug

Crossflashing Warnings:

1. Don't crossflash desktop drives to slim drives or the other way around
2. In some cases crossflashing an Asus drive to an LG or the other way around you may no longer be able to burn disks-SamuriHL
3. Flashing Official UHD firmware to a UHD Friendly drive will not enable Powerdvd aacs 2 decryption or playback
......"

[neo14]

Nobody can help me with my question above? Thanks

[zittrig]

Perhaps overseen.

Your drive is flashable. Flash directly to LG WH16NS60 1.02MK (no sleep bug) or ASUS 3.10MK (with sleep bug).

You'll find all information you need in the first post of this topic. Try it.