Submitted by Alex_SD on September 5, 2018
I just got off the phone with Tesla Support and I was told that WiFi connection is now REQUIRED.
Small software updates might still go over LTE but major updates (maps, SW-V9, etc) will NOT be delivered over LTE.
My car hasn't been updated lately for the simple reason that I never connected to WiFi.
They also mentioned that they couldn't force the latest software update to my car until connected to WiFi.