Did you also update the app and the system to this week’s latest updates?
Why would you need to update the WiFi if you are using a Boost - that takes the system of your WiFi?
Hi @Andrew276
Welcome to the Sonos Community!
Sorry to hear of these issues you are having. I think at least part of the issue is that your Boost is currently configured to be in a different system as your speakers. It will need to be factory reset and added while the app is already connected to your system.
I recommend you get in touch with our technical support team who will lead you through the process of getting this sorted out for you.
I hope this helps.