Flash mode:
COM Port does not matter, phone will be detect automatically.
1. Press "Dump read" button to read NV backup or "Dump write" to restore.
2. Connect phone in flash mode (Press "1" + "OK" button and connect USB cable).

Normal mode:
1. Connect powered on phone to USB, choose correct COM port in port settings.
2. Press "Dump read" button to read NV backup or "Dump write" to restore.