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R3 Provide data recovery throughout the British Isles, Northern Ireland, Eire, Europe, US & Worldwide.

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What Goes Into A Nand Read?

Data loss can happen at any time and can happen in the most unexpected ways. As long as your device hasn't been stolen (we're not that good 🙂), we can recover your data from the most unlikely disasters.

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★★★★★

Absolutely brilliant and bona fide company that does what is says in its company title. How important is your lost data to you??? Well if it means as much as it does to me and you are stupid enough to not have those back ups in place, then do not complain about the costs to recover them. Relatively speaking, was quite cheap considering there was 25 years worth of data recovered. I used my credit card on this failure on my part, but don't regret a single pound spent. Will and his team recovered the data from an old Linux system drive and put it onto a brand new one terabyte external hard drive for me ready to run under Windows. To all persons who need a reputable company and are trawling through various Google searches, this is the real deal and actually do their recovery on site. Hopefully you will never need to be in this situation, but if you do give them a call. Great interaction and regular updates throughout the process. Many thanks to all at R3 Data Recovery. John C.

John C


When a USB memory stick becomes unresponsive and a simple soldering iron repair doesn't produce positive results then we have another recovery option called a nand read.

Nand read

This method of recovery is very complex and involves several stages each very dependent on its proceeding stage.

Stage 1 is the removal of the nand chips. The number and style of nand chips varies with manufacturer, the chips must be unsoldered paying attention not to damage the delicate pins and then cleaned in an ultrasonic bath to remove flux residues.

Stage 2 is making dumps of the chip content. The data must be read from each nand chip, to be entered into software. This involves setting correct parameters for dump number, page sizes and any timings unique to the nand chip. This may have to be repeated if too many errors are detected at the end of the reading process and the settings tweaked.

Stage 3 involves reassembly of dumps. Once all the dumps are made they can be entered into software to start the long process of recreating what the microcontroller did when in charge on the USB device. Getting the data to line up within the dumps is a complex task involving a Xor pattern with many parameters to change that unfortunately isn't automated. Once this process has been completed successfully the integrity of the data is checked and if good copied off… Stage 3 may have to be repeated several times to get good data.