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.
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.
If you'd like to learn more or speak directly with our engineers, please call us at 0800 999 3282
Firstly, I truly thought all my data was lost (work and private).
But, I would like to thank your company and Andy Butler for the excellent service you gave me for the data recovery from my corrupted NESO (HITACHI) External 500Gb HDD in terms of:
Having reviewed the data that I saved from my drive, I found all of the data in there that would have been lost forever.
I can only all heartedly recommend your services to everybody after what I have experienced. It is re-assuring to know that there are still companies and people out there that take their work seriously and are prepared to help other people in their hour of need!
Once again a MASSIVE thank you for all your help, without you I would have been in deep trouble with work and would have lost lots of very valuable and irreplaceable memories forever!
Tasso Papadopoulos (Registered Hearing Aid Audiologist)
R3 Data Recovery is rated (4.6) by 294 customer reviews on Reviews.co.uk
If your hard drive happens to fail, contact our team of experts. Our skilled professionals will be able to reliably recover data on your hard drive and provide industry-leading turnaround times which give you the confidence that's necessary to develop a solid, effective recovery plan.
Call us today at 0800 999 3282 or fill out our FREE, no-obligation diagnostics form for immediate help!