Today my system decided it could no longer see my SONOS Five (note not a Play 5 - this has a mute button, not a play/pause one). On trying to get that back in I lost my ZP120. The android phone app appears incapable of seeing/recognising these devices and at best it sees them as the newer versions with the Play/Pause button but even with pretending this is the case the app can not hand shake with them. Net result I am now down two devices with no apparent way of getting them back.
I have tried disconnecting the power and then powering back up while holding the mute button, but this does little now aside from putting the device in to handshake mode with an app which can’t handle the handshake.