Data Recovery of 4.44 MB After Water Leaked into FLEXON microSD Card in Thunder Bay, Ontario
Data recovery became essential for a small business in Thunder Bay, Ontario, after water damage to a FLEXON 512 MB microSD card during a field operation. The card, used inside an environmental sampling device, contained 4.44 MB of critical operational data. After water leaked into the unit and corroded the card, the device could no longer read it.
WeRecoverData successfully performed a full recovery, restoring 100% of the lost data.
The Role of the microSD Card
The microSD card played a vital role in the company’s daily operations. It stored environmental measurements, field logs, configuration settings, and other essential data collected on-site. Although the total volume was only 4.44 MB, the information was highly valuable and could not be easily recreated.
Because the data supported ongoing environmental work, the loss immediately threatened project timelines and reporting accuracy.
How the Damage Occurred
The issue began when the sampling device developed a crack in its casing. During field use, water entered the unit and reached the internal microSD card.
When the team removed the card, they observed visible corrosion on the gold contact pins. Neither the original device nor any computer could recognize the card. As a result, the data became completely inaccessible.
Initial Recovery Attempts
The customer first attempted a careful cleaning using isopropyl alcohol to remove corrosion from the connectors. While this method can sometimes resolve minor surface contamination, it did not restore functionality in this case. The card remained entirely unresponsive.
With no accessible backup and no way to retrieve the data, the customer contacted WeRecoverData for professional assistance.
Laboratory Evaluation and Diagnosis
Upon arrival at the WeRecoverData lab, engineers conducted a detailed examination under magnification. They confirmed corrosion on the contact pins. However, further diagnostic testing revealed a more serious issue: the card failed to communicate with any reader.
This behavior indicated internal damage beyond surface corrosion.
Water exposure frequently causes severe failures in flash media, including electrical short circuits, oxidation of internal circuitry, and controller chip malfunction. In this case, testing confirmed that the controller had failed, even though the NAND memory chip still retained the stored data.
Advanced Chip-Off Data Recovery Process
Because the card showed no signs of electrical activity, engineers selected a chip-off recovery method. This advanced technique allows specialists to bypass a failed controller and access data directly from the NAND memory chip.
Inside a certified cleanroom environment, engineers carefully removed the NAND chip from the damaged microSD card using precision tools and controlled heat. They then read the raw binary data directly from the chip with specialized recovery equipment.
By bypassing the damaged controller entirely, the team gained direct access to the underlying data structure.
File System Reconstruction and Verification
After extracting the raw data, engineers manually reconstructed the file system. They rebuilt the original files from the binary output and carefully analyzed the structure to ensure accuracy.
This stage required extensive technical expertise, as chip-off recovery often produces fragmented or non-linear data that must be logically reassembled.
Once reconstruction was complete, the team verified all recovered files for integrity and consistency.
Successful Outcome
Despite extensive water damage and total device unreadability, WeRecoverData recovered 100% of the 4.44 MB of critical data. Engineers transferred the verified files onto a new, reliable storage device and returned them to the customer.
As a result, the business resumed its environmental operations without disruption or data loss.
Professional Data Recovery You Can Trust
At WeRecoverData, specialists handle even the most complex recovery scenarios, including water-damaged and completely unreadable microSD cards. Through advanced techniques such as chip-off recovery and manual file system reconstruction, the team restores data that might otherwise seem permanently lost.
When critical data is at risk, WeRecoverData is ready to recover what matters most.