I was stumped today, iOS updated to 15.7.1, and trying a system update to 15.7 from 15.6.
I got an update error, more details showed an error 30 on the Sub, tried again, failed.
Restarted Arc and Sub, failed again, then iOS was showing status ‘updating’ with blue icon, now stuck updating. light was off on Sub, ie not flashing as does normally when updating.
Opened Sonos Desktop App, about my system, all on 15.7 apart from Sub on 15.6. I assume Network OK, as I could ping all Sonos devices with sub 5ms response, also able to access Network Matrix on Sub and Arc. App said there was an update, tried again failed.
Time to call Sonos support, so they could investigate diagnostic
They suggested cause was a network issue, as is normally the case for any Sonos issue.
I wasn’t so sure, as I could ping all Sonos devices with latency <5ms, they have reserved IP addresses.
I managed to get the update installed eventually, involved restarting Arc + Sub several times, then disconnecting and reconnecting Sub to Arc via App.
I am still non the wiser what was the cause, I am curious, as this is only the second time in many updates (since 1.1?) that I have had update issue.
My environment is wireless (was SonosNet up until a couple of months back), and this is possibly the first or second software update in this configuration. Has been working flawlessly is this configuration for music listening including groups etc.
I have learnt today that the Sub uses the 2.4Ghz radio for updates, not the HT 5Ghz radio via the Arc. Looking at the Network Matrix, I also noticed my Sub is ‘root node’ for the STP network to the Arc, is this normal? I would have assumed the root node would be the Arc as this has the wireless uplink to LAN?
I think there could also be an issue with the iOS App, incorrectly reporting the status of updates, force closing the App resolves this.
Any network gurus have any thoughts on what I should investigate?