Can you test it with MCU2 please and let me know?1. No, when it went dark it was as as switched off. With the difference, that when it came back it has not been a reboot.
2. The MCU was replaced by Tesla in Jan 2020, and I assume it was a 8GB, because at that time Tesls replaced the whole MCU
3. I have had various versions, the car made every update when it was available.
i have now upgraded to MCU 2, and I have not tested it again. Usually I have the HDMI interface switched off