You run the utility (often named 3S_USB_MP_Utility or similar), which clears the old settings and writes new firmware to the controller. ⚠️ Critical Warning
| Error Code | Meaning | Solution | | :--- | :--- | :--- | | | Too many NAND defects | Lower the target capacity by 20-30% in settings. | | Compare Flash Fail | Flash ID mismatch | Manually force the Flash ID in the .UFD configuration file. | | Pre-Format Fail | Firmware area damaged | Use the "Factory Test" tab → "Clear CID" → then retry. | | Device Not Found | Driver conflict | Use zadig to force the WinUSB driver onto the device. |