I have a Sonos 1 system including one play:3 and two play:5 and a ZP90.
My ZP-90 stoped working (it’s dead) so I bought a “new” second handed.
Since I received it I have facotry reset it, plugged it by wire to my router and tried to install it (from my iPhone-app) via system->add product. But the system can’t find it.
When I reboot it now it starts blink green.
I have rebooted everything: the modem, the router, unplugged all play-speakers, the apps on my two phones.
Any ideas?