While it is a legacy tool, it is often hosted on community-driven repair sites like 4. Advanced Repair: Phison MPALL & Firmware Flashing
– if your SP V3700 is:
For official tool downloads and recovery instructions, users often refer to resources like the Silicon Power Support Page or specialized technical databases like USBDev for specific Phison firmware tools. formatter silicon power v3700 ps2251 extra quality
If the standard formatters fail, your drive likely has corrupted firmware. This requires "flashing" the chip. Fix All flash drive problems by resetting it's software 31 Jan 2016 — While it is a legacy tool, it is
Specifically targets drives with the Phison PS2251-03 or compatible controllers (like PS2307/PS2251-07). While it is a legacy tool