Can't Sync iPhone 11 to iMac
I have tried to sync my iPhone 11 with my iMac - specifically the Music content. When I connect the phone to the Mac though, I can’t see the phone in the sidebar of Finder. Apparently, the solution to this is to ensure that
CD’s DVD’s iOS devices
are checked in Finder Preferences. I have done this but the phone still does not show up in the sidebar. So I am flummoxed - where do I go from here? Apparently, the solution could be to install the latest OS on the iMac. I currently have 10.15.7 but when I try to upgrade I get this
which I don't understand since I am most definitely connected to the Internet. Anyway, shouldn't I be able to do the sync with the current OS on my iMac?