Apple has just released iOS 5.1 Beta 3 to developers as an over the air (OTA) download around the world. The Developer Center has yet to be updated with the downloads and change log, so check back soon as this develops.
iOS 5.1 Beta 2 was previously released as a standalone download back on December 12th, that introduced the new feature of being able to delete photos across PhotoStream on all devices.
Update 1: Apple has updated their Developer Center to include release notes and download links for iOS 5.1 beta 3, build 9B1514a: (thanks tipster!).
- iOS 5.1 beta 3 can be installed using over the air software update from devices that have iOS 5.1 beta 2 installed. Over the air software update can be initiated by choosing General > Software Update in Settings.
- Be sure to backup your devices using iTunes 10.5 or later or through iCloud backup prior to installing iOS 5.1 beta. After installing iOS 5.1 beta 3, you can restore your device using either iTunes 10.5 or later or through your iCloud backup.
- This version of iOS is intended only for installation on development devices registered with Apple’s Developer Program. Attempting to install this version of iOS in an unauthorized manner could put your device in an unusable state, which could necessitate an out of warranty repair.
- Devices updated to iOS 5.1 beta 3 can not be restored to earlier versions of iOS. Devices will be able to upgrade to future beta releases and the final iOS 5.1 software.