Misflashed LG WH16NS40 (SVC NS40, April 2015): DosFlash?

[raywood]

There is a case to be made that I followed instructions ... just the wrong ones. Be that as it may, I now have a largely unresponsive WH16NS40, old style. I seem to be stuck with the "CheckSum is mismatched" error, that is, and no apparent way to revert from firmware version 1.05.

Some sources suggest that, at this point, DOSFlash is my best if not only hope. I am unfortunately not finding clear instructions on its use. For instance, one source recommends a command like this:

Code: Select all

DOSFLASH R F0D0 1 A0 2 0 20 "origFlash.bin" 0

requiring several bits of hardware information that I lack (e.g., the port to which the command is directed, the proper answer for master/slave on a SATA system, size of flash chip in banks).

Is there a lucid guide to DOSFlash and/or information on how to identify the hardware information it requires?

[d00zah]

From Ultimate UHD Drives Flashing Guide Updated 2021

https://www.youtube.com/watch?v=eXgybNfHhcg - Obsolete but can be useful for recovery
only use the recovery steps for older NS40 drives!!:

Ok here's a summary of what you need to do

Try the recovery option in sdf tool if that fails do this:

Downgrade your drive to WH16NS60 1.00 with sdftool or makemkv command line
Full shutdown pull power plug or flip switch push power button for 10 seconds
Then reflash WH16NS60 1.00 again with the unlocked lg or Asus flasher
Full shutdown pull power plug or flip switch push power button for 10 seconds
Then boot in to your dosflash bottable and dump the firmware
Use the transfer tool to your correct firmware and flash it.

NS40 Recovery Image:
Flashed an NS50 firmware to an NS40 drive and can no longer read disks this IMG has all the NS40 FW you need to recover your drive just follow my dos flash video guide linked above
https://www.mediafire.com/file/8by2zqop ... D.zip/file

[raywood]

Thanks for the suggestions. Unfortunately, I have already tried those steps. I've blogged the effort in detail, if you would like to read up on it. Maybe you'll see something in the writeup that I have overlooked.

Not sure how the URL code works in this forum, so I'll just give the link: https://raywoodcockslatest.wordpress.co ... -firmware/

That's why I'm asking about DOSFlash.

[Billycar11]

Watch my dos flash video and use Marty's img for it your making It 10x harder for your self using actually dos use the dos flash gui

[raywood]

I appreciate the well-meaning advice. But unless someone can look at my writeup and tell me what I'm missing, I can only repeat that I have already done what you guys keep suggesting and it didn't work.

You may be right that the DOS approach will be much harder. The question for me is, where do I find a guide to the DOS approach, so that I can see for myself why you are saying that?

I've been using DOS for almost 40 years. I'm not super-excited about it, but I'll deal with it. But I'll ask again: could someone please point me toward an explanation of the DOSFlash approach?

[dcoke22]

I've been using DOS for almost 40 years. I'm not super-excited about it, but I'll deal with it. But I'll ask again: could someone please point me toward an explanation of the DOSFlash approach?

Everyone is pointing you to the relevant YouTube video on using DOS Flash. d00zah even linked to it explicitly.

[Billycar11]

I appreciate the well-meaning advice. But unless someone can look at my writeup and tell me what I'm missing, I can only repeat that I have already done what you guys keep suggesting and it didn't work.

You may be right that the DOS approach will be much harder. The question for me is, where do I find a guide to the DOS approach, so that I can see for myself why you are saying that?

I've been using DOS for almost 40 years. I'm not super-excited about it, but I'll deal with it. But I'll ask again: could someone please point me toward an explanation of the DOSFlash approach?

I read your write up the reason port.io on dosnflash won't install is because your on a 64 bit system as my video guide says you need a 32 bit windows portable or regular install I do know how to do it through dos but I'm not going to tell you when there is a easier way and it will only confuse someone else later

[Shadow71]

Thanks for all of the great information.


I'm pretty new to ripping. But finally broke down as I was upgrading my system, lack of storage space and OS drive space, and built a NAS. I have at least 250-300 DVDs and 450 BDs

The info in the second post worked for me.
I recovered my 2015 WH16N40-NS40, which was on OEM 1.00.
I flashed to OEM 1.01 and then 1.02, but it wouldn't go to 1.03 or 1.05.
I was able to flash it to BE-1.05_NS50 and it bricked.
Was able to flash down to BE/MK-1.03_NS50 and BE/MK-1.02_NS50.
The OEM firmware either 1.01 or 1.02 changed the SVC to NS50. But that must not be the true case.
The drive does read as a MT1939.


Am I at a good point and left it alone?

Drive Information
OS device name: \Device\CdRom0
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE WH16NS40
Revision: 1.02
Firmware date: 2114-05-07 10:26
Bus encryption flags: 17
Highest AACS version: 68

LibreDrive Information
Status: Enabled
Drive platform: MT1939
Firmware type: Original (unpatched)
Firmware version: 1.02
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Partial
Unrestricted read speed: Yes

[Rappin Larry]

From Ultimate UHD Drives Flashing Guide Updated 2021

https://www.youtube.com/watch?v=eXgybNfHhcg - Obsolete but can be useful for recovery
only use the recovery steps for older NS40 drives!!:

Ok here's a summary of what you need to do

Try the recovery option in sdf tool if that fails do this:

Downgrade your drive to WH16NS60 1.00 with sdftool or makemkv command line
Full shutdown pull power plug or flip switch push power button for 10 seconds
Then reflash WH16NS60 1.00 again with the unlocked lg or Asus flasher
Full shutdown pull power plug or flip switch push power button for 10 seconds
Then boot in to your dosflash bottable and dump the firmware
Use the transfer tool to your correct firmware and flash it.

NS40 Recovery Image:
Flashed an NS50 firmware to an NS40 drive and can no longer read disks this IMG has all the NS40 FW you need to recover your drive just follow my dos flash video guide linked above
https://www.mediafire.com/file/8by2zqop ... D.zip/file

.

Your instructions were lifesaver! I flashed an MT1959 firmware on a MT1939 WH16NS40 drive soft bricked it.
Only thing different I did was dumped and made flashable recovery firmware in windows, then moved my drive to an older computer that was already in ide mode.
Next, I booted from the PE environment you provided and went straight to the flashing point.
I'm now in 1.02, originally I was on 1.00.

[d00zah]

Your instructions were lifesaver! I flashed an MT1959 firmware on a MT1939 WH16NS40 drive soft bricked it.
Only thing different I did was dumped and made flashable recovery firmware in windows, then moved my drive to an older computer that was already in ide mode.
Next, I booted from the PE environment you provided and went straight to the flashing point.
I'm now in 1.02, originally I was on 1.00.

They were Billy's instructions, I just knew where to find 'em. Credit where credit is due. Glad you got the drive back.