This also happened to me 2
This also happened to me 2 updates ago ( 2015 scat pack ) I would be driving with the radio up and the whole system would lock up. I wasn’t able to turn off or down the radio, the nav would lock up and stop functioning. Couldn’t touch anything on the screen and my sports button wouldn’t work. The only way I was able to fix it was turning off the car. I used the security update USB to revert software and it solved the problem.