Ford has disabled software updates for the computer in your infotainment system called the APIM (Accessory Protocol Interface Module). This is basically the computer that runs your SYNC 4 system (your touch screen, navigation, apps, etc.). If your vehicle's SYNC 4 software version is 23187 or older, your vehicle's infotainment system cannot currently be updated, not even by a Ford dealership. Ford made a technical decision to block updates for certain SYNC 4 systems. As of now, they haven’t explained why. Ford is expected to release more info or a fix later.