Update: There is some problem with Apple Activation server, hence this method works for many users. I cannot guarantee you that it will work for you as well. So be ready to register your UDID before trying to install iOS 7 Beta on your iPhone if you stuck up with Activation screen.
Well, thats a good news for many who like to see how iOS 7 all new UI and Design looks and feels like. You can download it from torrents and restore it on your iPhone using iTunes software right away. You dont have to register your UDID to use iOS 7 on iPhone and iPod Touch. This is one great relief and for Apple fans and they dont have waste money on some scam sites that promises UDID registration.
Make sure you took backup of your iPhone before following these steps as it will completely erase your Phone data.
Step 1: Download the .ipsw file suitable for your iPhone.
Note: iPhone 5 has two models which is 2012 GSM as A1428 and 2012 CDMA + GSM handset as A1429. So double check your version before downloading them.
Step 2: Launch iTunes on your Mac OS X or Windows and go to “Device Summary” page.
Step 3: Click on “Update” while holding “alt option” key on Mac and “Shift” key for Windows OS users.
Step 4: Select the .ipsw file that you have downloaded.
Step 5: Proceed with the Restoring process. Wait for reboot of your iPhone and start exploring the Beta version iOS 7.
Its quite buggy and you can see it across many of your favorite apps and layout is messy at many places as well. The final stable release of iOS 7 will be clean as we know.
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