What Device can update to iOS 7?
If you are iPhone 3gs and lower version users want to update your iPhone to iOS 7, well, you have to upgrade your iPhone first. For iPad users, just sit tight way. iOS 7 just available for iPhone 5, iPhone 4S and iPhone 4.Note before get iOS 7 on your iPhone
Apple hasn’t provide any way to downgrade your iPhone from iOS 7 to iOS 6, that’s mean there is no reliable way for you if you don’t like the iOS 7. And iOS 7 is still in beta so it'll most likely be very buggy. So please take well consideration before updating iOS.Ways to get iOS 7 on iPhone 5, iPhone 4S, iPhone 4
1. Only registered developers can get the free iOS 7 beta from Apple. Of course, people find free iOS 7 on the internet most are impossible to be apple developer. However, if your brother or you have a friend who is developer, you can get them to add your device to their account.2. However, you don't conform to the 2 conditions above, but you really want to go for it, just spend some money and enroll in the iOS developer program here. You must download from the developer’s account.
Advice
I know I'm a little wordy, but if you haven’t update to iOS 7, it is wise to stop! You know what beta version means. It means this software still not perfect, some bugs still exist, so right now it is in the process of debugging to make it smooth.Moreover, I have found that some people search how to downgrade iOS 7 to iOS 6 on the internet until now. The full version will not make us wait too long, better to enjoy iOS 6 now and wait for full iOS 7 in patience.
PS: What if lost iPhone data after get iOS 7 on iPhone, how can i retrieve lost data after iOS 7 upgrade?
Don't worry, here are a bunch of solutions for you:
1. How to retrieve text messages on iPhone
2. How to recover iPhone photos
3. How to recover iPhone contacts
4. How to restore iPhone from backup