VISUAL NAND RECONSTRUCTOR

[HaQue]

Really excited to be one of the first in Australia to be receiving a VISUAL NAND RECONSTRUCTOR kit!

Many of you know I like to dig into all types of flash memory, and I will be really putting this kit through it's paces. I will be writing about experiences and also am planning tutorials to help others that also want to use VNR. I think all can agree that if you build a thriving community between vendor, customers, and friends in the field... everyone gains.

Only 5 or so more days to Official expected release, and to use a Horse saying: I am champing at the bit!!

If you haven't heard of it, then checkout:

https://www.facebook.com/rusolut

and some small hints as to what's in store.. looks really cool:

http://forum.hddguru.com/viewtopic.php?f=13&t=29132

[ici_lemmy]

Waiting september 15...
Knowing Sasha a little, it should be good !
A soon as we get the price I'll ask if I can have it...

[oliver]

Competition is getting more interesting!
When Visual NAND Reconstructor was announced, ACE has released the new adapters !

http://www.acelaboratory.com/news/newsi ... itemid=116

http://www.acelaboratory.com/news/newsi ... itemid=118

We'll see how it will be.

Oliver
Data recovery engineer

[Sasha Sheremetov]

Thanks for positive comments, finally our first project is on the finish line, though it took much longer to polish than we expected.
I hope we won't disappoint those who waiting and those who expect to find new features.
We'll try to keep resources/documentation/algorihtms of VNR in open formats as much as possible, to move NAND DR&DF on the next level.
When more brains involved in research process, everybody wins - there's no need to wait months/years for support of new devices and database grows up like a snowball.

P.S. ~2 years ago our team realized that some "weak" chips work better with lowered power, the reason is obvious "less power = less noise", plus some physic's effects.
So we added power adjustment to reader on hardware level (controlled through software chip settings). The voltage range limited to optimal by firmware to 1.6....4.0V (those who ever open ONFI know that modern chips work in power range 1.8V-3.6V).
Some chips work OK on 1.8V (Hynix/Micron). Others hang when power is lower than 2.2V (Toshiba/Sandisk). Work better means less bit errors when dumping (so ECC can correct it).
Mobile NAND/LPDDR works on 1.8V, wanna burn it - apply 3.3V.
Here's concept proof, posted several months ago.

Here's copy for those who not tired to read this post

01.07.2014:

"A modern NAND flash memory chips have serious problem associated with TLC architecture and low endurance limit. In case when the chip is read with standard 3.3V power there is a large number of bit errors appear in image (so-called "bad chips"). Very often these bits can not be corrected by ECC and user data remain damaged and unrecoverable.
The NAND Reader of Visual Nand Reconstructor supports discrete power control of NAND chip in range 1.8V .... 4.0V. When lowering power of core/IO of NAND chip step by step the internal noise of chip reduces. The result is significant reduction of bit errors. To estimate number of bit errors the Bitmap viewer is used. Bit errors look like contaminations (dots) on the area with the same bytes (columns). Here's software screenshots of the same data block that is read with the three different levels of power 3.3V, 2.3V and 1.8V.
The last image with 1.8V shows clear data with very little number of bit errors. These errors can be fixed by ECC. Data is recoverable.
Do you still freeze or burn NAND chips? Give it up, there's a solution!"



Thanks.

[HaQue]

Less than 24Hrs to go by my calculation! I hope people don't underestimate the importance of good, primary dumps. Getting to know NAND on a hardware level, not just in your recovery software is what can separate a shop getting consistent results, to one that has many "No Recovery Possible" outcomes.
Can't wait

[digitalferret]

@HaQue agreed. Fundamentals every time.
(Resisting the temptation to make a biological comparison about the importance of .... )

Looking forward to any forthcoming news and reviews from Sasha as well as yourself.

Keep up the good work guys.

K

[Izualim]

Reader looks exactly the same as NRT's, even some adapters.

[HaQue]

Probably looks a lot like many chip readers/programmers out there, but the software is the key. And actually existing still would be key as well I think too early to be comparing too much.

[Izualim]

Just making an interesting comment, not making any comparison.

[arvika]

http://rusolut.com