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We have 3 x Play 3; a surround sound system using a Sonos Soundbar, 2 x Play 1 and a sub; and until recently, 2 x Play 5 (Gen 1), all on the Sonos S1 controller. All are connected by ethernet on a BT mesh system, apart from one Play 3 which is connected wirelessly. One of the Play 5s has stopped working and after deliberation, we have just bought 2 x Era 300. We removed the Play 5s from the S1 app and before we added the new Era 300s, we upgraded to the ‘new’ Sonos app. The new app couldn’t find our existing system at all. We added the Era 300s wirelessly, the new Sonos app could find them, but not our existing system - all speakers are on the same mesh system now. We, probably foolishly, added the Eras to a new system, but now the Sonos app can’t find our existing products to add them. I understand we’d need to do a factory reset on them all in order to add them to the new system? But we’re concerned that that might not work even then, and obviously we’d lose all our current settings, playlists, etc. We now can’t remove the Eras from the new system either. So now we have two systems on two controllers. I wondered if we should uninstall the new Sonos app, then re-install it and see if it would find the old system but suspect it will just find the new system with the Eras on it. Can anyone advise what is the best thing to do here? We just want one system with all our speakers on…..

Turn off all devices except for the ones on the system you wish to keep.  Reset the Sonos app on your mobile device.  Then restart and choose to connect to an existing system.  Then factory reset the Era 300’s.  From the Sonos app, choose to add a new product. Follow the prompts to add the Era 300’s. 


Turn off all devices except for the ones on the system you wish to keep.  Reset the Sonos app on your mobile device.  Then restart and choose to connect to an existing system.  Then factory reset the Era 300’s.  From the Sonos app, choose to add a new product. Follow the prompts to add the Era 300’s. 

Thank you for this, but after uninstalling and then reinstalling the Sonos app, and removing the device we don’t want (old Play 5), the app still says it can’t find our existing system. So we can’t even get into it to add new products, unless we start from scratch again with all our products and lose all our information. We should be able to do what you say, and just connect to an existing system, but the new app can’t find it….