Try reinserting it into the mavic link everything up and try updating the battery software. It should only take a minute or two. Surely there is enough juice left in it to upgrade.
I'm not getting where people are getting you need internet to fly. I'm on the new firmware and fly with a iPad mini 2. I can turn off all internet connections and put it in airplane mode. Link up to the controller and mavic with no restrictions.
Try and picture yourself flying the drone from inside it looking out. When you get use to doing it this way it will help you with proper stick movements. Regardless of how the drone is facing.