16.1.1 update not good ...

Mine was surrounds in my main room 4 times I ran the update tna still missing had to reboot and remove the surrounds before they reappeared sigh 

then had to redo truplay again kind of used to it failing in some way every time now 

Issues after an update are nearly always caused by network issues, please see my post: https://en.community.sonos.com/speakers-229128/tips-tricks-resolving-random-issues-impacting-sonos-devices-6845346

Thanks but was a network engineer for 20 years before retiring last year 

Ever heard of this?

I hope you sort your issue out, please let us know when you've sorted your issue.

Not particularly relevant to my original post but thanks.

Why not tell us your experience with the update instead?

Can you explain why S2 app is still calling for update available immediately after successfully installing 16.1.1?

I don't have any issue after the update with my system. IAs I said issues with updates are 99% caused by network issues .  I suggest that you power down all of your Sonos devices for a min of 5 secs and power back on.

Try checking for updates again and if you still have your issue then submit a diagnosis and post the id on this thread.

I don’t have any speakers wired (using direct WiFi connection) and I always have to unplug the Beam and wait for the surrounds to join the WiFi network directly (lights to start flashing then stop) for any update to the Surrounds and Sub to apply.

I also had an issue with Hey Sonos / Sonos Voice not working and with the help of Sonos support worked out that home broadband via 5G (or 4G) is not officially supported - Sonos does not support the low MTUs that mobile networks typically offer. I now have my Sonos routing to the Internet via my fixed broadband and it all works fine.

To be honest it’s a little frustrating when people always say ‘it’s your network’ as the reason things fail.   In many cases, sure that is plausible — but In 99% of cases ?  Well, where are the facts to back this up? 

I like to think I know what I’m doing.  I’ve been with Sonos since 2009 when updates were a breeze.  I have a fast fibre connection, I have a small-business grade router, and I have *all* devices IP bound by MAC address.   Everything on my network is rock-solid and I can stream ultra-HD (4k) video without issue.  However Sonos updates never work unless I remove Play:1’s as surrounds to my Beam, and I do mean never.   If I don’t do this everything gets horribly screwed up.  Others have this issue.  I don’t know what causes it, but it sure ain’t my network. 
 

Andrew 

Agree, there’s no reason why Sonos couldn’t support lower MTUs and reply if fragmentation is required

The surrounds not updating when the beam is directly connected to WiFi came in with a firmware update a few years back and I never reported it.. Sonos has always maintained SonosNet in the best way to pair the speakers but as that’s on 2.4GHz it was the worst performing for me.

I just physically unplug the power cable from the beam.. wait a few minutes for the surrounds to notice the beam has disappeared then try the update and it succeeds. Ideally they’d fix that bug.

Sonos should put a lot more effort into logging and diagnostics and friendly error messages.. there’s no reason why the speakers can’t tell you it’s on a network without STP support or IGMP.. or that your MTU is too low to download Sonos Voice