1. Turn on CN+
2. FM Radio must be play
3. Press MAIN
4. Push right knob – 3 options menu will be displayed
5. Press AUDIO OFF till the radio shout down
6. 1,2,3 on the telephone keyboard
7. Push right knob – 4th option in menu – Service
2. FM Radio must be play
3. Press MAIN
4. Push right knob – 3 options menu will be displayed
5. Press AUDIO OFF till the radio shout down
6. 1,2,3 on the telephone keyboard
7. Push right knob – 4th option in menu – Service
This sat nav is 4.08 software version