Unable to downgrade sonos one (g2) to s1 compatible

I have been trying for over a week. I can't even chat as they seem your question and never answer.

It appears downgrading means having to connect to Sonos to download the S1 firmware onto the speaker/device.

I tried with older s2 android apps and when you get the point of downgrading it insists you have to upgrade to latest app. (Now called just Sonos)

It's the firmware in the speaker that needs downgrading not just the app?

Very po'd with Sonos right now seeing as this is all because it seemed to upgrade my speaker by itself?!

I have spent enough money on my system. I'm not buying more. And whole selling point was it being future proof.

I can't even cast to it using bubbleupnp!!

Dan 

I did mail the CEO directly, patrick.spence@sonos.com  Support can’t or won’t help and i seems that they have the answers on the screen when you call them. They tell you only that in a future update it will come back. But there were a few updates now, but whitout the downgrade option. The software in the speaker and app must be able to make the downgrade possible or otherwise it will not succeed. 

i thing everyone must mail de CEO whit a complaint, maybe it helps?

Just awful service. Awful support. Everything about this company is awful.   And i invested so much money. Yes I have an S1 system. I have 7amps . I tried to add a move2 for outdoors and I can’t do it. They told me to order the original move. I order it. You can’t downgrade it.  
they lied to me directly, knowing that it would not work. And they deliberately try to confuse you to get you to use an S2 controller.  Just awful, awful awful service.

Sonos app version 80.0
The ability to downgrade a Sonos product to S1 is temporarily unavailable, but will return in a future update.
 

lies lies lies

Using the S2 app on the old iPad allowed me to complete the downgrade successfully, and now my Sonos One G2 works perfectly with my S1 system. I hope this helps others who are facing the same issue!

I have just successfully downgraded the last of 4 homes from S2 back to S1, for anybody interested here is what you need to do:

1. You need an iOS device that can run iOS 15 / iPadOS 15 as the final version (iPhone 6s or 6s plus, iPhone 7 or 7 plus, iPhone SE (1st gen), iPad Air 2 or iPad mini 4.
2. Make sure it is updated to the latest version (iOS 15.8.2)
3. Remove the Sonos App if installed. Download it again, on a device in the list above it will only download the old gold 16.1 version since they do not support any newer versions.
4. Factory reset your S1 compatible player / component (for a full compatibility list see Sonos support document).
5. Use the S2 16.1 App to initiate the downgrade process (see Sonos support document for instructions)
6. On your regular controller install the Sonos S1 Controller App.
7. I recommend creating a new Sonos account to keep the two systems separate during the process.
8. Create a new system starting with the first factory reset player using the S1 App with the new Sonos account. I found some players require to be connected via LAN to the router / mesh for the registration.
9. Repeat with the rest of your equipment and then add your services and music library (even SMB V1 will work).
10. Delete the new Sonos CrApp, disable automatic firmware updates in the Sonos S1 App and disable automatic update of the S1  Controller App in the iOS App Store settings.
11. Now simply enjoy your music again like before and  no matter if Sonos goes belly up or not you can continue to do so.

Same problem here. I have talked to a employee from SONOS and she have noted that I have that problem. If many other users of SONOS, have that issue and we all, that have that issue, contact them. Maybe they have to do something about or make another decision.

Nice one 'Loyal Customer'!

Did the same thing with the following additional notes:

iOS version went to 15.8.4 when updating a disused iPhone 6s.

The App Store showed the black Sonos icon and indicated that it had a higher iOS version. Persist, and it'll offer you the functional gold version.

The S1 app prompted me to update but then concluded that we were using the latest version possible. Don't be dispirited.

I had to reinstate the music library which in turn required me to enable SMB1 as lower version on my NAS.

Why Sonos have inflicted this death march on previously loyal customers, I don't know. However, some of those customers appear to have more technical ability and resourcefulness than Sonos's management team. Good luck finishing off the S2 app. I'll be enjoying my music on my expensive audio equipment S1 until you finally finish and test it.

You are a hero among humans!! That worked for me, downgrading two brand new Move 1s (that I purchased over the 2s because they are advertised as being compatible with S1!). One addition here: using the antique iOS device one must be logged into the App Store with an account that has the new Sonos app on a different device when downloading the bronze app, or it won’t work. In my case the mini 4 was logged in to my wife’s iTunes account and she did not have the new Sonos app. I got an error, went to her new phone and downloaded new app, then back to mini 4 and was able to download the bronze app. From there, I was golden. 

There is a update for the Apple app and it now does say “Added S2 to S1 downgrade took”. So i going to try it, but i can find how it’s done? I think it’s the know way on the Sonos page. But i going to find out.