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 Post subject: Lite-On LMT-256M3M / a hard case
PostPosted: December 11th, 2018, 8:07 
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Joined: December 11th, 2018, 7:50
Posts: 2
Location: Moscow
SSD Lite-On LMT-256M3M. It uses Marvell 88SS9174-BLD2 controller (see the pic).

Several data recovery labs tried to restore the data, but with no luck. Electronic components are OK.
The only problem they found - is the broken controller.

So I'm looking to find a way to get the data from the disk back.

PC-3000 supports 88SS9174-BLD2, but not on the Lite-On Firmware.

I've got 3 other SSD on Marvell 88SS9174-BLD2 to perform several experiments of replacing controllers between disks (one Crucial M4, two Lite-Ons).
Results are these:
- if you put Crucial's controller to Lite-on, the disk will start up, but will not work.
- if you exchange controllers between Lite-On LMT-256M3M, the disk will be working, but all the data are cleared.

It looks like there is some data or encryption keys inside controllers that doesn't allow data to be read.

I would be glad to get some ideas for the next steps:
- get firmware/encryption keys from controller?
- datasheets for Marvell?
- other options?


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 Post subject: Re: Lite-On LMT-256M3M / a hard case
PostPosted: December 11th, 2018, 21:17 
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Joined: December 4th, 2012, 1:35
Posts: 3251
Location: Adelaide, Australia
You wont be able to swap controllers. Period.


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 Post subject: Re: Lite-On LMT-256M3M / a hard case
PostPosted: December 13th, 2018, 6:40 
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Joined: December 11th, 2018, 7:50
Posts: 2
Location: Moscow
Are there any options to try? To fix controller, or copy its memory content to another one?


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 Post subject: Re: Lite-On LMT-256M3M / a hard case
PostPosted: December 18th, 2018, 14:23 
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Joined: August 24th, 2017, 12:52
Posts: 15
Location: AZ, USA
Are you sure, that CPU is dead?
Bit errors on NAND chips contribute to 90% of SSD failures. Most of these errors appear in the small area where the Firmware structures are stored, and they cause the corruption of Main Microprogram or parts of Translator Tables. Chip swapping won’t do any good, because the cause of corruption is inside NAND chip.
You can try to heat up the NAND chips using small sticks and soldering iron. Use a temperature of about +100..+150 degrees. Sometimes temperature difference might help SSD to pass the initialization process and get into the Ready State. Or try the other way: you can freeze the NAND to -20C using a special Freeze Spray.


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