Apple released iOS 4.3.4 on Friday in an effort to fix a security vulnerability that was present on both the iPhone and the iPad. The fix was supposed to prevent hackers from using a PDF security hole to jailbreak both devices.
That didn’t quite work. The next day iPhone Dev Team was able to route around the security fix and issued a jailbreak tool for iOS 4.3.4. iPhone Dev Team has released the latest redsn0w jailbreak tool, but unfortunately it forces iOS 4.3.4 users to keep their iPhone or iPad tethered to their computer during sync and reboot. In other words, if you haven’t already updated to iOS 4.3.4 and want your iPhone or iPad to remain jailbroken, you’re going to be best off sticking with iOS 4.3.3 until another workaround is found.