How did I get the acceleration boost while NOT connected to the internet?

[CheckmateIce]

I bought acceleration boost for my new Model Y that has never been connected to the internet.
Immediately upon purchase my vehicle rebooted and it says I now have the boost. I have not connected this vehicle to the internet so how is this possible?

 

[GtiMart]

The car has an LTE connection... The Wifi connection is not mandatory for certain things.

 

[RCM11]

I bought acceleration boost for my new Model Y that has never been connected to the internet.
Immediately upon purchase my vehicle rebooted and it says I now have the boost. I have not connected this vehicle to the internet so how is this possible?

WiFi not needed for that upgrade installation.

 

[Velcade]

There's nothing to download. It's just a flip of the switch.