SD card Update installation: Car ON or OFF?

[Adam1]

Haven't done an update on my 2019 G70 in quite a while, and don't remember some stuff about the installation of the update. I have successfully downloaded the update onto a SD card. I know which buttons to press to start the actual installation, but I'm not sure whether or not the car should be ON or OFF, or if I can start the installation with the car ON and then turn it OFF? Obviously, need some guidance here. Thanks.

 

[joegr]

The engine needs to be running. If you don't want it to sit and idle for an hour, then drive it around. You won't have the radio or the cameras, but everything else will work.
While it is possible that your battery could handle the update without the engine running, there is a danger that timeouts could occur that would switch off the system in the middle of the update. If that happened, the unit could be bricked.

 

[Adam1]

The engine needs to be running. If you don't want it to sit and idle for an hour, then drive it around. You won't have the radio or the cameras, but everything else will work.
While it is possible that your battery could handle the update without the engine running, there is a danger that timeouts could occur that would switch off the system in the middle of the update. If that happened, the unit could be bricked.

So, as I see it, the only reason that the engine should be running during the installation is that we can't trust the system or the battery to keep functioning until the installation is complete. And, just to be sure, once the installation has started with the engine ON, the engine must be kept on until completion...thee can be no turning ON and OFF, or OFF and ON?

 

[joegr]

So, as I see it, the only reason that the engine should be running during the installation is that we can't trust the system or the battery to keep functioning until the installation is complete. And, just to be sure, once the installation has started with the engine ON, the engine must be kept on until completion...thee can be no turning ON and OFF, or OFF and ON?

Correct