[duskwuff]

Is there something I'm missing here, or are you really complaining that your car can't download updates after you disabled its network interface?

[sneak]

Any modification to the car’s surveillance systems means that the company will no longer service your vehicle.

If you prepay for an update, but modify the car to not track you, it is my understanding that, network or no, it will not receive any service (including updates) from Tesla.