Sonos One downgrade

I have an Arc and gen 3 sub upstairs on S2.  That was not my issue.  I have a play5 and sub gen2 downstairs I wished to keep on S1 and sadly that is no longer possible.  I still have yet to get them to work even on S2 but am so disgusted with Sonos at the moment they are just sitting in the corner unplugged at the moment. Yes S1 has issues but I seem to have even more issues with the S2 app.  At least that is my experience. 

BTW I wanted to do this in order to keep both systems as separate as possible.  In this case I had them on different apps which I loved for the short time I had it. 

Successfully downgraded Boost from S2 to S1. Boost can't be setup on new S1 system first. Setup Play 5 first and add Boost to that existing system. Powered off Sonos One product that is on S2. Rebooted internet router before the downgrade. Now successfully running S1 and S2 systems.

I can confirm this works although you do need an S1 device on the network. Bought a Connect cheap from eBay and downgraded my two PLAY1 and PLAY3 speakers. Tried without an S1 device and it did not work. 

What a mess.   Sonos should have built a “legacy” option into S2 units, so users could easly run them as S1 units and in A SINGLE S1/S2 APP move S2 units into an S1 group.    Sure, freeze the S1.  minimal or no bug fixes, certainly no new features.  But make it easy for users to have both S1 and S2 units.  Their most loyal customers will have both.  In fact, a single app with 2 groups of units (s1 and s2) would ENCOURAGE users to upgrade units to S2… they would constantly see S2 features the S1 units don’s support.  Much better approach than the constant nagging upgrade messages S1 users get.

@RentalGuy . There is no such thing as an S1 unit or S2 unit.

The reasons for the S1 / S2 split have been explained numerous times. It isn't going to change. 

Ok, picky.  S1 Compatible only an S1/S2 Compatible.  And reasons for having S2 is not the issue - it’s how they implemented it. 

It's not beimg picky. It is precisely because there are devices that could go in either an S1 or S2 system that it is better to have a clear separation of the units in the two systems. 

The fact that you think it is being picky shows you have missed the point. 

So there is no way to downgrade a system once every unit has been converted over to S2? My setup of 4 Play:1’s has been working perfectly for years now, but after the S2 upgrade they are basically useless to me. I am getting frequent drops on the systems and we only have 1 device that can run the S2 app. They were upgraded on accident, and up until now I loved the system, never needed to come here for support. Not a power user but a user that has gone from very satisfied to debating tossing the whole system on ebay.

From what I've read here there seems to be no difference between S1 and S2 from a wifi- standpoint, unless you where dependent on a Bridge, that is defunct under S2, but could be replaced by a Boost.

If by “we only have 1 device that can run the S2 app” you mean the phone you are using the app on, I think the requirements for the S1 and the S2 app are the same, so you also could run the S1 app on this device only.

From your post I gather you have wifi problems. Have you called Sonos to let them try and help you with this?

Thank you for your reply, unfortunately the S2 app does have different requirements - it is a 64 bit app on iOS and won’t run on older iPads or iPhones and unfortunately the rest of our home automation stuff is setup on older hardware that I don’t want to replace right now. My wife has a new iphone and didn’t understand that clicking the insistent upgrade button in the S1 app would make it so our Sonos system no longer worked with anything else.

Luckily we don’t have that large an investment in sonos stuff so far, the cost of replacing the other components would simply be more than replacing the sonos.

If I were to get an older device on ebay, could I setup a new S1 network and then reset all my devices onto that?