Software update has crashed my new Garmin Instinct 2 solar. Anyone else?

I noted that the software was to update today. Went about my business. Now the screen is frozen, watch can't even be powered down using the CTRL button. There is no online help addressing this issue. The Bluetooth connection is off and my phone can't reestablish the connection to the watch. I'm on vacation, hiking/biking every day. Not a good time for the phone to be disabled! Thanks for any words of wisdom or sympathy.