@Ray thanks so much for the links a few pages back, I updated my software this morning and installed the needed USB hub in my '16 w/o Nav and it worked like a charm. This is a great upgrade for me - especially since I don't have a native nav unit. Putting apple maps in the display is so much better than watching through my phone etc.
I did the FAT32 formatting of the usb stick, unzipping etc on my mac using OS X 10.12 and it went w/o a hitch.