Hi. I’m running Max2Play on a Raspberry Pi 3B, and I’d like to upgrade it to a 3B+. I’d prefer not to have to reinstall and reconfigure Max2Play, but the new Pi won’t boot off of the original sd card. Is there any way to make this sd card swap work? Thanks.
I assume your previous image was still based on Jessie or Wheezy (you can check in the debug info on Settings/Reboot). In this case, the underlying structure is unfortunately not compatible with the 3B+ which only boots with a Stretch image.
However, you can migrate your Squeezebox Server settings from the web interface and reload them onto a new image. You can also make a backup of your existing older image in case you want to return to it with the 3B.