iPhone 3.1 Beta Has Released To Developers

Today, Apple releases iPhone OS 3.1 Beta to developers:

iPhone SDK 3.1 beta and iPhone OS 3.1 beta are now posted to the iPhone Dev Center. These versions are for development and testing only and should be installed on devices dedicated to iPhone OS 3.1 beta software development. Please read the iPhone OS Pre-Install Advisory and the iPhone SDK 3.1 beta release notes before downloading and installing.

Now, the iPhone 3.1 release is still in beta and only available to developers. Apple does not provide any details about the update. But it’s quite sure Apple will fix the exploit that is currently used by ultrasn0w.

So, if you have already unlocked your iPhone 3G with ultrasn0w, please stay away from upgrading to iPhone 3.1.