Phison provides a tool called ModeConverter (for switching between Removable and Fixed disk). Sometimes running ModeConverter first resets the controller enough for MPALL to see it.
The Silicon Power V3700 is a high-speed USB flash drive that utilizes the Phison PS2251-16 controller. Users typically search for "formatter" or "repair tool" for this device when the drive becomes corrupted, unreadable, or displays a incorrect capacity (e.g., 0 bytes or "No Media"). This report outlines the diagnosis, required tools, and formatting procedure. formatter silicon power v3700 ps2251162