Among their most recognizable and widely deployed chips is the (often abbreviated as PS2251-07 or simply PS07 ). While the hardware itself is capable, the firmware installed on the controller is what defines the drive's speed, reliability, and features.
Restoring Your USB: A Guide to Phison PS2251-07 (PS2307) Firmware phison ps2251 07 firmware
Expected time: 2 to 5 minutes.