[jmciver]

One other nugget specifically for iPhone users that also use CarPlay....

In iDrive disconnect your phone from CarPlay. I have found that if I connect my phone to the Wifi adapter for coding, the car will sometimes re-connect to CarPlay, thus dropping the wifi connection to the wifi adapter for coding. There are a couple of ways you can do this. One is reconnecting your phone to your car the normal Bluetooth way, or you can just delete your phone from the car entirely. I usually just reconnect my phone to the car using standard Bluetooth.

Once you disconnect you phone from CarPlay, go into your WiFi settings and either turn off "auto join" for the CarPlay WiFi network or tap "forget this network". Doing this will ensure your iPhone does not try to reconnect to CarPlay, even if you disconnected your phone from CarPlay in iDrive.