Sm3271ad Mptool
Disclaimer: This will permanently erase all data. Backup everything if possible.
The tool interfaces directly with the flash drive's controller and NAND memory to perform deep-level maintenance tasks: Sm3271ad Mptool
Over time, NAND flash develops "bad blocks." The controller usually hides them. If too many appear, the drive crashes. MPTool can scan, identify bad blocks, and hide them (reducing total capacity but resulting in a stable drive). Disclaimer: This will permanently erase all data