Your tech support told me I was out of luck. That I could not use the Sub mini with my current system of 6 speakers. All Gen 1 except for a Beam. It was suggested that I return it to the store. Talk about a technical and marketing train wreck. In any case, I managed to put on my nerd hat and figured it out thanks to others on Google. A lot of unplugging and DHCP reservations. Now I’m running S1 in conjunction with S2. It’s not too pretty but it all works.
I get that progress is inevitable but so is backward compatibility. A flash upgrade perhaps? Whatever it is, please consider updating the Mini to work with the S1. Thanks.