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SM325QF AC Help!

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kaxi

Post subject: SM325QF AC Help!

Posted: March 14th, 2014, 9:59

Joined: March 14th, 2014, 9:39
Posts: 61
Location: Macedonia, GREECE

I am trying to extract data from a 2GB flash chip dump from a stick with an SM325QF AC controller.
The page is 4288byte 8*(512+16)+64, where page tail is all zeros, and sector tail's 2 first bytes are probably the ID, while the 3rd is page number (0-127), so block is 128p long. Every block pair has same ID, and seem to be interleaved to each other, so bank is 512K, and block 1M. There are some same IDs for two blocks.
I assemple the image by block ID, but only files less than at about 300K are correct. Biger jpgs are scrambled, or incontinous, that is as if lines are mising. I am obviusly missing something.
Does anyone have some knowledge of this controller?
I am not expiriensed, and I only have SD (so I have actualy no software) and trying with custom utils. Any help whould be most aprecciated.

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pcimage

Post subject: Re: SM325QF AC Help!

Posted: March 14th, 2014, 11:08

Joined: November 29th, 2006, 10:08
Posts: 7855
Location: UK

I assume you've read the dump with SD flash tool, right?

What was the ID of the chip?

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http://www.pcimage.co.uk

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kaxi

Post subject: Re: SM325QF AC Help!

Posted: March 17th, 2014, 3:22

Joined: March 14th, 2014, 9:39
Posts: 61
Location: Macedonia, GREECE

Sorry I cannot post reply to PM, It seems I'm too new in the forum.

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kaxi

Post subject: Re: SM325QF AC Help!

Posted: March 17th, 2014, 3:27

Joined: March 14th, 2014, 9:39
Posts: 61
Location: Macedonia, GREECE

Correct pcimage, I used SD tool to read the dump only, after that the tool is useless.

Here are the chip markings:

MCU:
SM325QF AC
A90813 0804
TAIWAN ST8

Flash:
0802 1-2
M 29F16G08MAA
WP A

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HaQue

Post subject: Re: SM325QF AC Help!

Posted: March 17th, 2014, 4:11

Joined: December 4th, 2012, 1:35
Posts: 3779
Location: Adelaide, Australia

What is the chip ID? 2c d5 94 3e ?
and you sure the page size is not 4320?
cheers

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kaxi

Post subject: Re: SM325QF AC Help!

Posted: March 17th, 2014, 5:36

Joined: March 14th, 2014, 9:39
Posts: 61
Location: Macedonia, GREECE

Hello HaQue,
This is the chip ID:
2CD5943E74410000

Micron, MT29F16G08MAA

It is a 4288 page size, the (512+16)*8+64 format is clear in hexedit.

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pcimage

Post subject: Re: SM325QF AC Help!

Posted: March 17th, 2014, 15:35

Joined: November 29th, 2006, 10:08
Posts: 7855
Location: UK

Soft center flash extractor works with that chip with 4320 page size.

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http://www.pcimage.co.uk

New!! HDD-PCB.COM for all your PCB and donor HDD requirements!

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Dmitri

Post subject: Remote flash recovery

Posted: March 17th, 2014, 16:34

Joined: February 8th, 2014, 8:08
Posts: 461
Location: Eastern Europe /recovering worldwide/

kaxi wrote:

I am trying to extract data from a 2GB flash chip dump from a stick with an SM325QF AC controller.
... Any help whould be most aprecciated.

I won't be claiming this flash is 100% recoverable without seeing the dump, but quite likely we'll be able to help reassembling the dump remotely.
Should you decide you need an assistance, feel free to email me (address is on the website in my profile).

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• Remote RAID, NAS, SAN, VMware, DVR (CCTV), flash and tape recovery. Data recovery support.

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