- apply the new switch (v 4.0.55 or higher) and controller versions to your Unifi Gear,
- move the switches back to using RSTP and [img]https://uploads-eu-west-1.insided.com/sonos-en/attachment/18c6c79d-bffe-4b40-90b1-c425c8d6d835.png[/img]
- Modify the port settings on the LAN ports that connect to Sonos Gear, - turn off STP.. (Turn off Enable Spanning Tree Protocol)[img]https://uploads-eu-west-1.insided.com/sonos-en/attachment/89ac4449-7f50-4b04-bdc8-60e2b095314a.png[/img]
ver 45 seconds with STP)
hope it helps