Possibly bricked my drive (BP50NB40, SVC-NB40)

[AdasTheAxe]

I got my BP50NB40 today and decided to try to upgrade it to be UHD compatible. I read the guide a few times before I began, but I clearly missed a few things, because now it seems I've bricked my drive. I used SDFtool to flash "HL-DT-ST-BD-RE_BP50NB40-NB50-1.03-NM00800-212005070917.bin" to the drive, not realizing that it said "NB50" and not "NB40." Now my drive won't open - when I push the button, the light just flashes. I've tried flashing other firmware onto the drive, and I've tried the recovery tool in SDFtool (though I'm not sure I did it right.) I've had no luck with either, it seems the 1.03 firmware is stuck on there. I'm not sure what my next step should be - I understand that something can be done using DOSFlash, but I'm not sure what that process is. Is my drive completely bricked, or is there anything I can do? I'm a fairly advanced computer user so if any option exists, I'm willing to give it a shot. At this point, I'll be happy to just get the drive working again, let alone getting it to read UHD.

[AdasTheAxe]

An update: I went through the steps in the Ultimate Flashing Guide and successfully got the BP60NB10 1.00 MK firmware on the drive, but it still won't open. Any ideas what I could try?

[Chronicler1701]

Exactly the same thing happened to me. Didn't realize that the drive was the SVC: NB40 instead of NB50. I've tried reflashing the firmware to something else, but it doesn't take. I even tried using LG's utility to update the firmware, but it doesn't recognize the drive. Any help would be greatly appreciated.

[mandole]

I have a backup of firmware and this maybe solves your problem. when I disassembled my BP50NB40 external case, I found that there was a model labeled BU20N.
I checked that the BU20N firmware is also available. but the BU20N models are not yet UHD friendly even if they have a mt1959 chip.

BP50NB40-NB40-1.0.zip

(2.61 MiB) Downloaded 764 times

capture_02.jpg (51.01 KiB) Viewed 11504 times

If you are not sure if this firmware is correct, open the external case and check

capture_01.jpg (86.3 KiB) Viewed 11504 times

[AdasTheAxe]

How would I go about trying to flash this to my drive? The computer doesn't even recognize that it's plugged in. Recovery tool failed when I tried that. When I plug it in and push the tray button, the light flashes but nothing else happens.

[Billycar11]

How would I go about trying to flash this to my drive? The computer doesn't even recognize that it's plugged in. Recovery tool failed when I tried that. When I plug it in and push the tray button, the light flashes but nothing else happens.

It's not worth the effort of recovering sorry I have tried a few times on those always a dead end.

[neoof86]

Hi All,

Sorry to resurrect this thread but I seem to have hit the same issue, there was a label on my drive and I did not spot the SVC Code as NB40

I have the same issue of the fact the drive will not now open and appears to be a BU20N inside so I may just be out of luck

The only difference I have is that MakeMKV can see the drive and so can the SDFTool, I did try and restore the firmware dump I did before but not luck with that tool. If there is another I am willing to try! Just a shame as the drive worked perfectly apart from 4K Also now lost the way to write some blu rays to back up files

Any help would be greatly appreciated

[AdasTheAxe]

Unfortunately I tried everything and was not able to come up with any real results. I ended up replacing my drive

[neoof86]

Hi

Oh no really!??? I don’t even mind not having UHD just the drive working would be nice but shame if it’s just off to landfill

I was even willing to try other methods but if they don’t work at least we all live and learn, thanks for replying

[AdasTheAxe]

Yeah I unfortunately wasn't even able to get the regular blu ray reading to work. I'm not a frequent member here but figured I should let you know - there's not much info out there and people aren't super active here so I figured I might be able to save you some time. I tried various methods but wasn't able to restore the drive to original firmware

Sorry to be the bearer of bad news, but I hope it at least will save you the hassle of digging through the same info that I did.

[flscans]

Hi all, I know this is a old thread, but for others coming here because of a 'bricked' BP50NB40 SVC CODE: NB40 ROM VER: 1.00, due to flashing an incompatible firmware (like what I did!) and the drive does not eject, I tried a couple of things and in the end using the original firmware posted above works!

I used SDFtool Flasher v1.3.6.
As mentioned by others, you need to use the RECOVERY option, and for this to work, you need to select the current firmware when the first pop-up file explorer appears. Then in the normal dropdown, I selected the 'BP50NB40-NB40-1.00-N016602-211409031732.bin' file. According to the Marty, this is so that the boot ID can be obtained. If the flashing finishes very quick (less than 5 seconds), the flashing was not successful.

If the above does not work, then try flashing to another wrong firmware using WRITE first, e.g. use the BP50NB40-NB50-1.03MK firmware, then RECOVERY and selecting the same BP50NB40-NB50-1.03MK firmware in the first popup. Then in the normal dropdown, select the BP50NB40-NB40-1.00-N016602-211409031732.bin' file. (Tried a few different combos, and I cannot remember exactly the steps, sorry... I thought is a was a lost cause, and was just trying my luck.)

In the end, I reverted to the 'working' firmware, and now the drive can eject and has reverted back to the original firmware. I was really planning to throw the bricked drive away. Good luck to any one else having the same issue.