MG4 Software Update Thread

[AdamskiEM]

Even removing the ground from the 12v battery didn't seem to power down much... Somehow the entertainment system stayed powered on. Maybe I didnt leave it long enough, but I guess its taking power from the HV system via some transformer into the LV system?

 

[DonBattino452]

@AdamskiEM Hmm, that really doesn’t sound good. I wouldn’t have expected such a large version jump to cause this without a SIPS update. There is a guide in the RMI documents that explains how to properly disconnect the 12-volt battery. If I remember correctly, there are two methods: one “conventional” way and one for emergencies. I’ll check the files in a moment — I think I saved the document in my favorites. Please stay calm and definitely don’t get the idea to touch the high-voltage system yourself.

Edit: Rescue Sheet,