The update rolled out yesterday BTW… But can you answer a few questions?

1. Do you get any error codes when the update fails?
2. Do you have any speakers wired?
3. Do you have another device you can use to perform the update?

In addition to ​@Pools-3015 questions….

1. How far away are you from your router? Try moving closer to it.
2. Have you updated the software on your device?
3. Have you deleted the Sonos App and re-installed it to get the latest version?

Also, remember the hardware update is different from the app update (reference #3 above).

I completely turned of everything, and then it worked. 

And I’m quite happy: my sonos + port was a HELL with Tidal. Losing connection every 10 minutes, refusing to play, … It was a hellhole. 

Now everything works fine. For the moment ...

These are symptoms of IP conflicts.  These happen when your router loses track of its IP table due to a reboot or power loss, and it starts handing out IP addresses that are already in use by other devices.  Sonos updates often uncover a router in this state because each Sonos device is rebooted during the update, causing it to request a new IP.  You can easily prevent this from happening again if you go into your router setup and reserve an IP for each Sonos device.