Looks like I’m stuck on version R63 on my MG4 SE.
When I went to the car, I noticed that the display was still on. It had frozen during the first update attempt, and I had to disconnect the 12V battery.
I tried the update multiple times afterwards – even using the R38 package – but nothing worked.
When I tap on “Infotainment ECU” in the update menu, it shows the restart prompt, but the car doesn’t reboot. It just freezes and nothing happens.
When I try “AVN MPU”, it says that more than one update file exists on the USB stick.
I haven’t tested with NTFS formatting, since FAT32 used to work without issues.
So for now, I’ll probably just stick with the R63 version and wait for R67 to be released but my next scheduled service is in five months anyway.
I think part of the problem might be my new MacBook. Back when I used my old Windows PC, the updates from R33 to R38 and R63 worked without any issues!