1. Phone must be powered on.
2. Connect the phone to UART cable.
3. Choose correct COM port in port settings.
4. Press "Unlock" button for direct unlock or "Read codes" to read security codes.
    Or you can "Read User Lock" or "Reset User Lock".
5. If you have connection errors, try to type *#197328640#, 
    select: Common - Diag Config - UART_diag USB_NULL and reboot phone.