Apple has just released iOS 4.1 Beta 3 (build 8B5097D) and iOS SDK 4.1 Beta 3 (build 10M2308) for developers. This is probably the last beta release of iOS 4.1 before Apple will seed iOS 4.1 final version to all iPhone 4, 3GS, 3G and iPod Touch 2G, 3G users. If you have a registered Apple Developer Account, you can download iOS 4.1 Beta 3 and SDK by singing into iPhone Dev Center.
Download iOS 4.1 Beta 2 and SDK
All those who have upgraded to iOS 4.1 Beta 1 can unlock their iPhones by using Ultrasn0w 0.93. Those who have upgraded to iOS 4.1 Beta 2 are out of luck at the moment as beta 2 came with the baseband upgradation which is not unlockable using Ultrasn0w 0.93. Updating your iPhone to iOS 4.1 beta 3 will not only leave your device in a locked state but you won't be able to jailbreak your device by using JailbreakMe by Comex.
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