My European car (2013 Volvo) had no checksum or even identifier for the firmware as I found out when my car would just randomly cut all power at speed. I broug

My European car (2013 Volvo) had no checksum or even identifier for the firmware as I found out when my car would just randomly cut all power at speed. I brought it back to the dealership and they found it had a completely different car’s update (2017 different model) installed!