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I think this thread is a classic example of "no news is good news". I'm pretty sure 99.9% of these get done without a hitch. But nobody is going to go out of there to way make a thread or post that a software flash was done correctly. That's already the expectation. It's those who end up having problems that'll share their story.My trusted longtime service advisor at a very large GMC dealership told me they have done well over a thousand vehicles for this latest update and have only had two bricked vehicles which were back on the road and fixed the next day. He advises all his customers to leave the car overnight "just in case" something happens.