using thr play:5 as a standalone speaker using the line-in after upgrading to a Play 5

I’m trying to understand what you’re asking here. That appears to be a statement,

Hi, that was the subject; apologies. 
 

I have 2 Play:5s that I upgraded using the Sonos promotion. It seems a pity to throw them out. I was hoping to use the speakers as standalone devices using the line-in input. Appreciate any insight. 

You could even using them via a S1 controller with all existing functionality in S1. And if, using that controller, you set the line in to autoplay, they will works as dumb speakers for any wired in source. Even if there is no WiFi.

Thanks Kumar. When I upgraded to the new Play 5, Sonos turned off functionality and S1 does not detect the old Play:5. 🙁

I do not know the gory details of what you are seeing because I refused to be railroaded by Sonos into moving to S2 so I do not know all of those. But what you are talking about is the objectionable stunt that Sonos tried to pull before customer outrage forced them to abandon this tactic. Now, there is a way for older S1 hardware to still work for customers who have chosen to use it get discounts on purchase of new S2 capable hardware.

Wait for someone else that knows all the details of the “how to”  to post here, and/or write in to Sonos customer support via email for guidance on how to get your S1 hardware to still work on S1.

If I recall correctly, if you did this after June 2020, you should succeed. But those that fell for the Sonos trick before their course correction at about that time, had no option except to throw away the old hardware.

The problem is that to configure the line in to autoplay, the unit needs to be recognised. Once that configuration is done, there is no need for such recognition, or, as I said, even for WiFi to be there.

For more information, see: https://www.theverge.com/2020/3/5/21166777/sonos-ending-recycle-mode-trade-up-program-sustainability

I have not read it all today, but you will get the background from it, but may still need to know the “how to” bit.

@SanjShaman Just to be clear: you own a pair of Play:5 (gen 1)'s that have been bricked by Sonos in the short time bricking was part of the trade in program? When did you take part in the trade in program?

Hi, it was in Sep 2020. I can get a more exact date. I recall I waited as I was reasonably miffed. Thanks

Your legacy play:5s should be working in a S1 system now.  The should have been working as S1 back in June 2020 when Sonos made the S1/S2 split.  When did your legacy play:5s stop working?