Besides the stupidity of allowing updates while car is in motion (instead of limiting it to say parking / charging mode only) - the doors and locks thing isn't new.
My Aunt had a IIRC late 80s or 90s BMW and when the electrics went out (battery or alt died), the same thing happened. Doors could open if they were unlocked but if you had auto locking set up (after shifting from park to drive) you were basically screwed. This happened in Bangkok where the temps are crazy bullcrap hot too, so she was stuck in a car with dead electrics with no open windows and couldn't open doors ... not good.
What? I've owned two different '99 BMWs (a 328 and a 540), a 2003 (X3), and my current car is a 2012 (135). They've all had the same central locking system that has been in BMWs for ages. If the doors are locked - you just pull the door handle twice and it lets you out!