Flash · chip-level work · ADR-2025-3489
One Word From the Phone, Then Nothing at All.
She got a word from it (the card), and then she received nothing. The microSD had become 'corrupted' for some reason
, which is the error message your phone shows you when it can't understand a card. Afterwards things began to get worse instead of better: in her laptop it doesn't recognise it's existence
. It didn't show a wrong size or even offer to format; there was just complete silence, as if nothing had been placed in the slot. Many of the files on it were not backed up
. All we received was the card itself, and this is all a job like this ever needs.
Same story on yours? Tell us what it does — the look is free.
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What failed, and why.
These two symptoms are located at different levels of abstraction. However, the second symptom determines the path. When a phone reports corruption, it has communicated with the card and could not interpret the structural information provided to it: annoying, but superficial, and it can often be resolved through reading around the damage. When a computer does not recognise a card, it means communication did not occur at all. This places the problem lower down than the file system; specifically, within the layer whose sole function is to communicate. Once that stops communicating, no software will restart it. The memory being spoken for is a separate unit and retains whatever data was written to it regardless. Any type of card is £250 + VAT based on the published bands, and inspecting one costs nothing.
What the bench did with it.
The order of the job →| Equipment used | Its work on this job | The reason for it |
|---|---|---|
| PC-3000 Flash | Reading the memory independently of the controller | Directly reads the flash off the chips, going around the controller, with a maker-ID library kept updated here |
| Rusolut Visual NAND Reconstructor | Turning the raw read back into a logical read: correction codes → mask → page/block order | Rebuilt raw NAND dump: ECC, XOR mask, page order, files. |
| IR preheat & BGA rework station | The entire package was lifted, and each pad was treated as needed to allow it to fit in an adapter | Heat applied long enough to release the chip and re-ball its pads, but never hot enough to harm what’s inside. |
What the bench did with it.
Give the front end its chance first
A non-responsive card is worth an hour before anything permanent is done to it, as some cards are just slower and some have a cracked joint at the contacts which a hot iron may repair. This particular card was placed onto a monitoring workbench, to enable the test technician to observe the current drawn by the card and compare it side by side with the responses received from the card. The card drew the current expected for a card of this type, but did not respond to any commands at any speed level, which matched exactly the experience of the laptop.
Lift the memory away from the part that failed
When the package had been heated long enough for it to release, it was lifted whole from its original mounting points, and its pads were cleaned until it would seat properly in an adapter socket. The process of heating the package is not particularly exciting; however, every aspect of this is temperature based: sufficient heat to break the bond at each joint, but never enough to trouble the silicon inside or the data held in it.
Order first, photographs afterwards
What a "raw read" represents is simply unformatted data, and therefore looks nothing like a file. Therefore, correction codes were applied to remove errors; the masking layer was removed; and all of the data blocks and pages that the controller had stored previously were restored back into their previous locations. At this point, the arrangement the controller used to present became available again. A file system was then mounted over the top of this arrangement and included her folders.
What went home.
All of the photographs were transported home on new media, and she was given plain information regarding which photographs had returned damaged instead of being handed a percentage to interpret. She carried out both actions relevant to resolving the issue without being prompted to do so: she refused to format the card, and she stopped inserting the card into her telephone. A memory card costs £250 + VAT under our published price banding.
Begin here if yours is doing the same thing.
More work off the flash and SSD bench.
Yours doing something similar? Power it down first.
Published prices are fixed. Memory cards and USB sticks are £250 + VAT. Any stand-alone drive is £300 + VAT. Drive configurations containing multiple disks (RAID, NAS or server) start at £500 + VAT. First assessments are always complimentary. Thereafter, data recovery charges are also fixed in advance and in writing, so you'll always know how much you owe before paying any money. Shut it down, get a quote first (by phone or with the form), then send it in or drop it off at our Guildford intake laboratory, Monday to Friday, 9am to 5:30pm (no appointment needed). On most jobs you only pay if we recover your data.