Just hours after Apple released its iOS 4.3 golden master (GM) build to developers, the release was reportedly jailbroken using the same method that had worked for the initial betas. A Cult of Mac report suggests devices running iOS 4.3 can be jailbroken using a more advanced process, which requires users to create a custom IPSW, or a simpler method that only works as a tethered jailbreak.
