The search for the correct version of MPALL is a quest in itself. Because Phison does not publicly archive these tools, technicians often scour Russian and Chinese hardware forums (such as Flashboot.ru or USBDev.ru) for the specific version that matches the VID (Vendor ID) and PID (Product ID) of their malfunctioning drive. The "v3720B repack" has become a keyword for a specific set of capabilities—fixing controllers that were bricked by improper formatting tools or sudden power loss.
Use a tool like Flash Drive Information Extractor to confirm your drive is actually a Phison and identify the exact PS2251-XX model. phison mpall v3720b ps2251 flashboot repack
Navigate to the folder and run MPParamEdit_F1.exe (parameter editor) as Administrator. This is where you set up the flashing profile. The search for the correct version of MPALL