Sd Card Uupd.bin ((top))
If you want to reuse the card, you must remove the "rogue" volume.
On devices like the Ender 3 , this file is often used as a temporary storage point to remember where a print was in case of a power failure.
Professional data recovery labs have tools to bypass the faulty controller entirely. Under a microscope, they will remove the protective lacquer from the card and use fine wires to connect directly to specific test points on the memory chip's circuit board. This allows them to read a raw, sector-by-sector "dump" of data directly from the flash memory itself. Then, using advanced algorithms and proprietary software, engineers reconstruct the broken file system, manually assembling files in the correct order—a complex, expensive, but often successful procedure. For those with irreplaceable photos or important legal documents, the cost of professional recovery is often worth it.
To minimize the likelihood of encountering a uupd.bin file or other issues with your SD card:
