Run the firmware update tool and follow the on-screen instructions. The tool will detect your USB drive and display its current firmware version.
Updating the firmware on a controller is a delicate process used to fix corrupted USB drives, restore "Read Only" disks, or repurpose a drive. Phison Ps2251-07 Firmware Update Tool
When a drive fails—showing 0MB capacity or an "Insert Disk" error—it is rarely a NAND hardware failure. More often, the firmware’s logical address table has corrupted. The official "PS2251-07 Firmware Update Tool" (often versions 3.xx or higher) is the only consumer-accessible method to force the controller into a "ROM Mode" (shorting specific pins or using a jumper) and rewrite this base operating system. Run the firmware update tool and follow the