Software Update Mechanism?

[Dena]

OTA updates don't require a personal subscription to a cellular company - if the setting is enabled Ford will push out updates as needed/requested and will be downloaded via cellular network either as you drive or when you shut your car off/at a scheduled time (depending on what module(s) are to be updated). In-vehicle hotspots do require a personal cellular plan though. As far as I know wifi Sync updates via your own house internet is obsolete with Sync 4, as well as customer USB Sync updates (to my knowledge) - neither system will use your phone for module updates either.

My car synced up with my home network so far, I don't know of any updates. An internet connection is an internet connection whether it come off fiber, twisted pair or the cell network. TCP/IP is the heart of every data packet. There might be other layers but nothing moves on the internet without TCP/IP and that means your car must understand so there is not reason it can't use a home network.
Disclaimer: I worked with a company that produced a device that interfaced to the internet. We couldn't use code developed for other devices so our internet connection was completely developed in house. Naturally, when it didn't work, I was given the fun job of tracking down and fixing the problems. So should you be curious about TCP/IP and internet protocol layering, I can provide an explanation.

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[spedy7]

My car synced up with my home network so far, I don't know of any updates. An internet connection is an internet connection whether it come off fiber, twisted pair or the cell network. TCP/IP is the heart of every data packet. There might be other layers but nothing moves on the internet without TCP/IP and that means your car must understand so there is not reason it can't use a home network.
Disclaimer: I worked with a company that produced a device that interfaced to the internet. We couldn't use code developed for other devices so our internet connection was completely developed in house. Naturally, when it didn't work, I was given the fun job of tracking down and fixing the problems. So should you be curious about TCP/IP and internet protocol layering, I can provide an explanation.

I'd love an explanation! Always curious about the deeper workings of software/networking/etc.

I don't have that much hands-on with Sync 4 (I don't roam through everyone's center screen stuff unless I have to - which is rare since Sync 4 is pretty robust), so that's good that you can still use in-home wifi for updates.