How to get iOS 7 with iPhone 4?

How to get iOS 7 with iPhone 4?

It hasn't officially come out for users. Only for developers. But they put beta versions out. You can visit one of the developers sites until the official Update comes out. But be warned, if anything goes wrong you WILL NOT be able to use your phone or device until Apple Releases the actual software update. There are a lot of tutorials on how to download it on Youtube.com

If you want to try it early, it's totally safe if you get your device registered with a developer account. I used http://www.instantudid.com/ and you just give them your UDID, pay $5, and they'll instantly put it on their developer account. Then you can download the beta from imzdl.com/ios.php, hold alt (or shift on Windows) and click Restore in iTunes, and select the firmware you just downloaded. If you don't get your UDID registered, your device could get disabled.