So I am going to have my friends iPad mini set up tomorrow evening for my iPhone 5s purchase. I had heard something about the app auto updating? Right now I can check upgrade eligibility and it shows the three models and their pricing, and the "Buy" button for the 5s is faded out. Will this automatically become solid and clickable once its 3am or do I need to refresh it? Or if I go straight to the iPhone 5s page where I select the device then where I would hit continue, and theres just no button, will it appear? The first option would be preferable as I would have already gotten through verizon, but I need to know either way. Thanks!