"An unknown error occurred.'' is displayed on the driver installation screen for a wired connection, and the connection does not start even if the USB cable is reconnected. : [mocopi app for PC]

Please check the following.

1. Make sure you are using a USB cable for data communication.
2. Check if your smartphone's CPU is compatible with the listed models here.
3. Check if the driver is installed with administrator privileges. If you do not install with administrator privileges, the installation may fail.
4. Uninstall the driver first, then reinstall it with administrator privileges. If the error persists, restart your PC and try again.