If I choose to register for the upgrade credit does anything at all change with the speakers that I register for the credit?
do they still work (never bricked by the system) and still get updates, etc?
it says my Sonos One and One SL’s are eligible but I don’t want to lose them from my system.
Nothing happens to your speakers. They will continue to work and get updates as they do now. The only thing to note is, if you sell, state to the new owner that the upgrade credit has already been used.
Thank you for the info.
I guess I’m off to claim my credit.
Time for some new Era 100’s 
I have 4 One SLs so have 4 lots of credit to use as and when I want more speakers 
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