What's to say this wasn't precisely that? Maybe at the talk we will learn that accidentally uconnect was listening to the update FW messages from the sprint net

What's to say this wasn't precisely that? Maybe at the talk we will learn that accidentally uconnect was listening to the update FW messages from the sprint network. Often the board that handles the radio acts like a bridge in modern cars. It tends to be the beefiest computer hardware in the vehicle. So it is on the high speed CAN bus and a node on the more star shaped low speed bus. When they updated the FW, they removed the bit of code that prevented dangerous messages IDs from leaving the controllers on the radio board and possibly added code that could put arbitrary CAN bus messages on the buses as relay from the sprint network. I am very eagerly awaiting the talk.