The flash drive uses a non-3S controller (e.g., Alcor, Phison, Silicon Motion).
Download the 3S USB Mass Production Utility v3.287 and extract it, ensuring the file path does not contain Chinese characters, which causes errors.
Download the from a trusted source.
For brand-name drives (SanDisk, Samsung, etc.), . These vendors use proprietary controllers. Only use this utility on generic, "no-name," or counterfeit USB drives that have lost their capacity. It is a rescue tool, not a maintenance tool.
