When the SPH10H-FM is not working properly or is in faulty status for any reason, you may reset by pushing the pin-hole reset button at the back of the headset main unit. Insert a paper clip into the reset pin-hole and press the reset button for a second with light pressure. The SPH10H-FM will be switched off after which time, you have to turn the system back on and try again. However,
this will not restore the headset to factory default settings.