s1 product not found on s1 app

It’s often easiest to set the wifi credentials of the new router to match the previous one. 
 

Otherwise, have you followed the guide?  https://support.sonos.com/en-gb/article/connect-sonos-to-a-new-router-or-wi-fi-network
 

Hi, I don’t think this helps as two of my three Sonos products have connected no problem to the new one WiFi.

the link you sent has worked for two devices but not the one in my original message.

what other solutions are available please? 

If the app can’t find it, this might be a time for a factory reset, and then add it to your existing system as though it were a new device. There may be some alternative suggestions from others though…

Your wording indicates you may have updated some of your devices to S2, while leaving the Play:5 on S1 as it can’t be updated to S2.

Please be clear what app you are using.

Hi, 

no all my devices at s1 - I have 3 s1 devices, 2 are connecting fine one can’t be found and when I try and find it on the s1 app it forces me to update to the s2 app which is no good.

o have factory reset the device already. That has not solved the issue as the s1 app is still forcing me to the s2 app instead of searching for a product.

this is infuriating 

Can you temporarily connect it to your router via Ethernet cable?

There should be a way to bypass the S2 upgrade option, I faintly recall folks needing a smaller font or some such to see it.

Are you sure you are using the "add to your system" and not the "make a new system" setup option?

Instead of letting it try to get you to install S2, I think there was a “More Options...” at the bottom of that screen. I may be mistaken, since it’s been a while since someone else had that problem here.

Downgrading to S1