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: The "emergency" way of disconnecting is only for the high voltage battery.

Please keep us updated.

 

[AdamskiEM]

@DonBattino452 Thanks for this. Looks like I got lucky. I had the idea overnight to just pull the fuses instead which is a lot safer. I did that just now and once the system rebooted itself it went back into the engineering menu itself, said that the update failed again but this time the version was not missing, and all the other controls are working again! Thanks for your suggestions

 

[Diggsy]

@DonBattino452 Thanks for this. Looks like I got lucky. I had the idea overnight to just pull the fuses instead which is a lot safer. I did that just now and once the system rebooted itself it went back into the engineering menu itself, said that the update failed again but this time the version was not missing, and all the other controls are working again! Thanks for your suggestions

What fuses did you pull? Could be useful if anyone else finds themselves in this situation.

 

[EV Focus RO]

MCU is still there for SWI69 build (R33, R38, R40, R42)
But not for SWI68 build since R63

MCU file is there, but from R38 is in fact the same as R33, so not really updated ? I assumed that starting with R38 you need SIPS to update the MCU to the right version.

 

[siteguru]

I have 1100R38 and my MCU is 69.4.4.0 ... is there a newer MCU for the SWI69-29958-1100Rxx software branch?

 

[DonBattino452]

69.4.7.0 with R40 @siteguru

 

[AdamskiEM]

What fuses did you pull? Could be useful if anyone else finds themselves in this situation.

24 and 8.

Unfortunately CarPlay is not working.. At least the screen isn't showing the button as lit up.. The phone seems to think its connected.

I managed to update to R67, but MCU is still 68.4.3.0. Do we think that is the reason it's not working?

The Google Drive only has a few specific versions in the FCIM folder.. I guess I need SIPS to update to the actual recent one.

 

[Mouss]

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?

I confirm you don't wait long enough. You need to wait until the screen turn off and you can plug the ground.