Issue with Android adding an old device?

Not in the FAQ, good luck

https://support.sonos.com/en-us/search?q=error+code

Hi ​@BXSMOOTH 

Welcome to the Sonos Community!

Sorry to hear of this issue you are having with updating your speakers.

Error 1106 is “REGISTRATION_REQUIRED_NEXT” - what this means, or why you are seeing it, I am not entirely sure.

I recommend you get in touch with our technical support team who have tools at their disposal that will allow them to give you advice specific to your Sonos system and what it reports.

I hope this helps.