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Sonos 1 System

  • November 9, 2025
  • 3 replies
  • 49 views

Lost all connection on most Sonos 1 products 

play 1 , connect : amp , sub, boost

No changes to my network .

now I am messages Incompatible equipment 

have always still been able to use my “legacy “ equipment … 

it would cost me a small fortune to replace 7 products to S2!

any ideas on what to do ?  Or what changed with S1 products . 
thanks in advance 

Best answer by LizzieTechie

After many many hours with customer care , I got it working 

here is a synopsis of what took place : 

6 devices on my system got upgraded to the S2 Sonos os which made them incompatible to the S1 system while two products were S1 and worked .

This is what we did :  Disconnect(unplug from

power) all products that were SonosOs S2 

then Factory Reset those products via the S2 App => Goto HelpCenter => Sonos S1 Legacy => Downgrade product ….

then in the Sonos S1 app => Add Product to system !

did this six times !!!!  But it worked 

the explanation of WHY these products upgraded to S2 , is a mystery.  The explanation was that some products are Compatible to run on the S2 app while some are not … don’t know 

Will leave for another day ! 

3 replies

Airgetlam
  • 44820 replies
  • November 9, 2025

Retire the BOOST, it isn’t needed any more. You can hang your components off of your LAN either by WiFi (once they’re reconnected), or by wiring one of the other components (recommended temporarily). 
 

But I’d suggest a network refresh as well. Unplug all Sonos devices from power, then reboot your router. Wait two minutes, then plug back in your Sonos devices. At this point, you can wire another device other than the BOOST, that device should act in the same manner, and create a SonosNet signal for everything to connect to. Once they’re all showing up again, check for updates in the Sonos controller to S1, and apply them, but no need to upgrade to S2. At this point, you can decide if you want to maintain a wired device, or connect via WiFi, be sure to read the wireless and wired systems FAQ.

However, if you continue to have issues, I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem (if you can, you may not be able to), and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here, they get sensitive about GDPR.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.


  • Author
  • Contributor I
  • 1 reply
  • Answer
  • November 10, 2025

After many many hours with customer care , I got it working 

here is a synopsis of what took place : 

6 devices on my system got upgraded to the S2 Sonos os which made them incompatible to the S1 system while two products were S1 and worked .

This is what we did :  Disconnect(unplug from

power) all products that were SonosOs S2 

then Factory Reset those products via the S2 App => Goto HelpCenter => Sonos S1 Legacy => Downgrade product ….

then in the Sonos S1 app => Add Product to system !

did this six times !!!!  But it worked 

the explanation of WHY these products upgraded to S2 , is a mystery.  The explanation was that some products are Compatible to run on the S2 app while some are not … don’t know 

Will leave for another day ! 


Airgetlam
  • 44820 replies
  • November 10, 2025

It’s certainly odd. Upgrading a device requires a human to click on a button, it’s a pretty defined and clear process. It doesn’t happen on its own.