Becomes completely unrecognized by your PC or displays an "Unknown USB Device" error.
If ChipGenius reports "Unknown," try:
: Available on the official Silicon Power website , this is the safest first step for consumer-level repairs.
Phison MPALL (Mass Production Tool) v3.72.0B or newer – or – Phison Format & Restore (SP Tool / UPtool)
It is a small, one-click application that identifies supported chips and formats them in about a minute. Important Considerations: