Using and installing the iOS 5 beta firmware is done at your own risk. Note that the beta is intended for developers only. Don't pirate Apple software and be aware of the risks and consequences of testing and using the iOS 5 beta.
Once again, Apple has released another beta update to iOS 5 plus all of its enterprise applications. The list of all the applications posted with updates are below:
- Xcode 4.2 Developer Preview 6
- iOS 5 beta 6
- iTunes 10.5 beta 6
- Apple TV Software beta 5
- iWork for iOS beta 2
If you're a registered developer with the Apple Developer Center, you have access to download all these software updates. After quickly reviewing the release notes, it would seem that iOS 5 beta 6 doesn't have much of anything new. Just simply bug fixes and other support-related issues.
As said in the above picture, iOS 5 beta 6 can be downloaded over-the-air just like the previous beta updates. To do OTA, just simply go from Settings to:
General > Software Update
Note: If you're on a jailbroken device, you will be unable to download OTA unless you revert/restore to a stock firmware. After restoring, you can choose to use the standard IPSW file or use OTA.
Remember: Backup your device(s) on iTunes 10.5 beta 5 or iCloud prior to updating to iOS 5 beta 6. Otherwise, you will be unable to do so due to compatibility issues between your device and the running version of iTunes on your computer.
If you decide to update via the IPSW file instead, you can download the iOS 5 beta 6 file along with the other beta applications directly from the Apple iOS Developer Center.
For jailbroken users: Redsn0w or sn0wbreeze has not been updated or said to support iOS 5 beta 6. If you wish to stay jailbroken on the iOS 5 beta, do not update at this time.
Read this article by BGR to get the full release notes of iOS 5 beta 6:
Source(s): Apple, BGR