iOS 6 Beta Without UDID Registration: How to Update to iOS 6. IOS 6 most advanced mobile OS. With its easy-to-use interface, amazing features, and rock-solid stability, iOS is the foundation of iPhone. And even as others try to catch up, the technologies and features built into iOS keep iPhone years ahead.

• Download iOS 6 Beta 1 from here
• Download the latest version of iTunes form here

Let’s Install!

1. Open up iTunes and connect your iOS device using your USB cable
2. Once you see your iOS device on the left panel, click it.
   
3. Hold down on the Alt+Option (Alt+Ctrl or Shift for Windows users) buttons and click the Check for Update button on the main panel
   
4. Select the .ipsw for iOS 6 Beta 1 you just downloaded from the mirror.
   
5. Click OK and let the iTunes do all the work.

P.S. If your iOS device is currently jailbroken, you’ll need to backup everything and do a fresh restore of iOS 5.1.1 and complete the setup and restore your backup.
If you got over excited and already updated to iOS 6, you would need to downgrade to iOS 5.1.1. Plug your iOS device into your computer with iTunes and boot into Recovery Mode by holding both home and lock buttons until the screen goes entirely black. Release the lock button while holding the home button until iTunes pops up with a message. Perform a restore to iOS 5.1.1 from there.