⚠️ Important: Do not use Windows Update or generic Prolific drivers – they deliberately disable older chips to prevent crashes.
Do not use Windows Update – it often installs the broken driver. u232 p9 driver windows 10
If the U232-P9 continues to fail:
| Problem | Solution | |--------|----------| | Code 10 (This device cannot start) | Legacy chip + new driver → Uninstall & use v3.3.2.105 | | Code 31 (Device not working) | Windows blocked driver → Disable signature enforcement | | No device detected | Try different USB port / cable. Some adapters are faulty. | | Data errors / garbage output | Lower baud rate or change flow control to None. | | Clone chip | v3.3.2.105 works but may be unstable. Consider buying FTDI-based adapter. | ⚠️ Important : Do not use Windows Update