We have 3 Sonos beams. Two update fine. One refuses to.
We have unplugged it for an hour.
We have disconnected it from the HDMI port.
We have done the above singly and at the same time.
It's attached to a Samsung Smart TV. We have uninstalled it from the Samsung and re-installed.
There is NO, ZERO problem with the router. Even the SONOS app acknowledges that the WiFi is fine.
When we get an error message, it is simply “1”.
I don't know if we need the update, but this is driving us crazy.