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It looks like you’re referencing a Phison PS2251-07 (often labeled PS2307) USB flash drive controller. This is a very common controller found in many USB 3.0/3.1 flash drives from brands like Kingston, Corsair, Patriot, and ADATA.
Complex Recovery: Using MPALL tools is risky and can permanently "brick" the drive if done incorrectly.
Symptoms: You can copy files off the drive, but cannot delete, modify, or write anything new. Phison Ps2251-07-ps2307-
Firmware (FW): The actual operating software for the controller (e.g., FW07FFxxxx.BIN) . Common Error Recommended Tool Write Protection Phison Format & Restore or PhisonWP Device Not Recognized Phison ST-Tool 3.67 / 3.71 Corruption / No Media Phison MPALL with matching Burner/FW files
Device Identification: Often shows a VID = 13FE and PID = 5500 in diagnostics tools like ChipGenius. Common Recovery Scenarios It looks like you’re referencing a Phison PS2251-07
The PS2251-07 is designed to bridge the gap between high-performance NAND flash and the USB 3.0 interface while remaining backward compatible with USB 2.0 and 1.1 standards.
Reliability: It is known for a "firmware panic" mode where the drive might suddenly report 0MB capacity or identify as "2307 PRAM". This usually indicates a firmware corruption rather than a hardware failure. Bootable USB drives (Linux ISOs, Windows installers via
compliant controller, it remains fully backward compatible with USB 2.0 and 1.1 interfaces, ensuring it works on virtually any legacy machine. Flash Compatibility: It supports a wide range of NAND technologies, including