Excuse my ignorance, but I have a bit of a question regarding updating to iOS 7 later on this afternoon. I've hit a bit of a financial bump, so for the time being, I am using the Personal Hotspot on my phone for internet. Is it possible to still update to iOS 7 (regardless of how long it takes) without an actual WiFi connection? I don't want to hurt my phone mid-upgrade. Again, excuse my ignorance. I'm just curious.