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keith



Joined: 25 Feb 2014
Posts: 340
Location: Sydney

PostPosted: Fri Mar 16, 2018 8:11    Post subject: Sandisk 98 de 90 92 1x1 32GB
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(4385)

ID not in database. Will send TV details in skype
IMG_2636.JPG
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keith



Joined: 25 Feb 2014
Posts: 340
Location: Sydney

PostPosted: Wed Mar 21, 2018 4:45    Post subject:
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Just wondering if there is any update on this one? Thanks
Сергей



Joined: 26 Aug 2005
Posts: 17620

Flash-Extractor developer

PostPosted: Thu Mar 22, 2018 3:05    Post subject:
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i read zeros

i think there is problem with connection

may be chip have different id
arvika



Joined: 18 Nov 2009
Posts: 1728
Location: Poland

PostPosted: Thu Mar 22, 2018 10:52    Post subject:
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This ID: 98 de 90 92 means that it is internal problem with some data signal (it is cutted / crack inside the card). Correct ID should be 98 de 98 92. This case is unrecoverable. You can little try heat the card but never help for me.
jeremyb



Joined: 09 Dec 2008
Posts: 1525
Location: RecoverMyFlashDrive.com Fairfield, CT, USA

PostPosted: Sat Mar 31, 2018 4:12    Post subject:
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I must argue this point, while I think something is "wrong" I don't think the wires are cut.. I personally think the proper "read" mode hasn't been selected by software when the NAND chip is booted and it's stuck in purgatory. ie: the controller inside the NAND chip expects to be programmed by the external controller.

Reasons being..
#1 If you measure diode voltage across all rails the values are constant, so there is no breakage, lets say D0 -> | <- Controller, connection to D0 is cut, the value would be different as voltage passes through the controller to ground instead of NAND to ground.

#2 if you FORCE DDR mode you'll get data..

In NAND Reader goto

Conf->Options
Debug -> After Reset paste

Cmd 0x9c
 
Cmd 0x00
Addr 0x0 0x0 0x0 0x0 0x0
 
Cmd 0xef
Addr 0x80
Data 0x0 0x0 0x0 0x0
Wait
 
Cmd 00
Addr 0x80 0x0 0x0 0x0 0x40
 
Cmd 0xef
Addr 0x80
Data 0x0 0x0 0x0 0x0
 
Cmd 0xef
Addr 0x10
 
Cmd 0x9e
Wait


Now pick out the suspected cfg (eg: 98 de 98 92), make sure DDR is checked in Options->Chip..

Presto, data
Very Happy Shocked Shocked Shocked
arvika



Joined: 18 Nov 2009
Posts: 1728
Location: Poland

PostPosted: Sat Mar 31, 2018 21:00    Post subject:
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Interesting. For example I have now case Sandisk MicroSD 16GB with similar problem, I get ID like 98 * a0 92 (I do not remember second byte). I use your method, and select manually chip ID: 45 4c a9 92, put info to Debug and set DDR and try read. But dump is usually empty, there is some data but it is trash. Interesting is that after i disconnect reader, close NR and connect again reader and run NR it shows me correct ID: 45 4c a9 92. But still trash in dump. Resistance on all Data signal is same.

Some time ago I have typical MicroSD card 4x6. One bank give good ID: 98 de 98 92 and was read, second bank give: 98 de 90 92 and can't read.

I will test this method on more cases.
HDDRCVR



Joined: 29 Sep 2015
Posts: 436


PostPosted: Sat Mar 31, 2018 21:29    Post subject:
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I also have a similar situation I will report back. Maybe this thread can be moved to chat after.
jeremyb



Joined: 09 Dec 2008
Posts: 1525
Location: RecoverMyFlashDrive.com Fairfield, CT, USA

PostPosted: Sun Apr 01, 2018 1:36    Post subject:
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FYI: Run this command on ANY Toshiba/SanDisk WL NAND and it will enable/force DDR. Saves a lot of time reading high capacity NAND (NON-DDR) chips.

Also weird is how sometimes on the first ID by the controller the NAND ID is 100% different (but valid) and the second ID is correct.

Also many thanks to Sergey for added Before Read & After Reset debug commands, it makes hunting for proprietary NAND commands much easier.

eg:
Prefix SLC Reads as
Cmd 0xa2
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