I'm a bit paranoid of OTA updates. My uncle had that in his Explorer. It was done via cellular. He lives in Northern Ontario where the Cel network can be patchy as far as signal goes. More than once he got into his truck and it wouldn't start because it was halfway through a download of an update. I know the Bolt is over wifi which will be much more reliable than cellular but what happens if the internet goes down halfway through an update? I don't want a system file corrupted because of an interruption!