I doubt it? I’m not sure how it works but I could definitely see it working without having to transfer any data at all. All it has to be is a glorified QI charger and the phone can auto-update itself from Apple’s servers just like any other iPhone.
All OS updates are signed If what you are saying were possible, then all phones would always be susceptible to a man in the middle attack of someone faking apple's server to send a fake OS update. All this seems to be is a qi charger that has the ability to also turn the phone on / off then it can just connect to apple's server and update itself like normal.