Restore iPhone 4/3GS to iOS 4.0.1 evading the iTunes error
iPhone Dev-Team has refused to come up with the jailbreak for iOS 4.0.2, and for pretty obvious reasons too. So for users who have upgraded their iPhone 4/3GS to iOS 4.0.2 reverting back to iOS 4.0.1 is not as simple as going to the iTunes store and pointing to iOS 4.0.1 psw file. If you try to point to that file iTunes will give an error saying that your device could not be restored. Reason being that Apple has stopped signing iOS 4.0.1 as its own strategy to catch Dev-Team off its guard.
But for an average user this is an irksome stone block as they are now stuck with an Apple device that can’t be jailbroken. Redmond Pie details-in on a method to change your system’s host file so that it point to the Cydia store instead of Apple store. This way you can downgrade your iOS to 4.0.1 version and enjoy the jailbreaking liberties using JailbreakMe tool.
