The PS2251-07 (also known as PS2307) is a common Phison USB 3.0 controller found in many Kingston and Toshiba drives. When these drives fail—often appearing as "Read-Only" or "2307 PRAM"—the Phison MPALL (Multi-Port ALL-in-one) production tool is used to reflash the firmware and restore functionality. Prerequisites & Tools
Using these tools is considered high-risk and will erase all data on the drive. phison ps225107ps2307 mptool
Recovering "dead" flash drives, updating corrupted firmware, and fixing drives that show up as "2307 PRAM" (a typical "panic" mode where data is inaccessible). Firmware Files: The PS2251-07 (also known as PS2307) is a
Phison UPTool: A "Sorting" tool designed for drives with high bad-block counts or lower-quality NAND flash. It is often more successful but significantly slower than MPALL. PS2251-07 (or 2251-07-7): This is the internal Phison