prob with new app

Hi Aidan. Do you have several Sonos devices? This sounds like one of them needs attention and has “left the herd” so to speak . You may well find a call to the excellent technicians is in order via https://support.sonos.com/en-gb/contact as they can look at the diagnostics and tell you how to sort it out.

I am having the same problem. I’ve tried offloading the app twice and I’m stuck in the same loop. 

I am having the same problem.

After updating to the new app (currently on 80.00.04), the app wouldn’t show my Sonos Boost anymore, so I disconnected it. I proceeded to factory reset all speakers (One Gen2 + One SL). And to set up my system from scratch. After pairing and connecting one speaker to WiFi, I‘m stuck in the exact same loop OP is describing. Tried this multiple times, resetting speakers again, deleting & reinstalling iOS app. Tried multiple iOS devices. Always stuck at this Update / Sign in as the System Owner loop.

The new app version does not show the boost for some reason even though it's still there. I left mine alone which I'm glad I did. I have since rolled back my android app and yes, the boost shows up again! 

Had the same issue, managed to grab the user icon and sign out, then sign in with a newly created account. I had a split system where 3’s that were in S1 would not register to the build 80 app account.

Had same issue with iphone app and ipad (never ending loop), problem solved when i was installing desktop app for mac..

I’ve having exactly the same problem. After factory resetting my devices to connect to a new wifi network, I was able to connect my devices again using the app. When I was finished that, the “update software” button came up and then I was in the “doom” loop. It said I needed to login to sonos.com (which I did), then said the “owner” must login, but I’m the owner. Round and round, even after turning off all my devices and restarting, along with re-booting my router. I’m stuck, as it appears everyone else here is. :(

I waited on the phone for two hours and finally have a tech on the line. It appears that my 1000GB router from Spectrum is the cause of the problems. The only solution is to change out the router because Sonos doesn’t know why the router is incompatible, so they can’t fix it on their end. 

That’s interesting. I have just changed my home wifi system from fibre to 5G. As a result I’m now using a Nokia FastMile 5G Gateway router. It sounds as if I may have the same problem you are describing. Not looking forward to a long wait for support, but I guess there’s no other options if I want to be sure.