If you want to restore the headset to factory default settings, use the Factory Reset in the configuration menu. The headset automatically restores the default settings and turns off.
To do a Factory Reset on your Expand Boom, you need to enter into the Voice Configuration.
1. To enter the voice configuration menu, press and hold the Center Button for 12 seconds until the LED shows solid blue and you hear high tone double beeps. You will also hear a voice prompt, “Configuration menu”.
2. Tap the (+) Button or (-) Button to navigate between the menus, until you hear the voice prompt, "Factory Reset"
3. Tap the Center Button to confirm. The Sena Expand Boom powers off with a voice prompt, “Headset reset, goodbye”.