Before using it, always run GetInfo or ChipGenius to confirm your controller and flash vendor. Then, search for a tutorial specific to your exact USB drive model. And for the love of data, do not use this tool on a drive that still works and has important files – it will erase everything without warning.
This tool is the ultimate "last resort". It operates at a low level, communicating directly with the PS2251-07 micro-controller to re-flash firmware and re-map NAND flash sectors. It is brilliant for fixing "brick" scenarios, but the learning curve is steep enough to discourage casual users. What Makes It Interesting: phison ps2251-07-ps2307- mptool