An iOS flaw fixed by Apple in version 4.3.4 has been jailbroken just days after the update was released.
The update fixed a PDF exploit used by JailbreakMe 3.0 to allow iPhone, iPod and iPad owners to unlock their devices, but according to Redmond Pie, which has packaged the jailbreak, two tools - PwnageTool and Redsn0w – will still unlock devices.
However, unlike previous jailbreaks using the flaw, the latest hack is a tethered jailbreak, which requires devices to be connected to a computer when they are powered up, and will not work on the iPad 2.
As such, jailbreaking enthusiasts are warning against updating to 4.3.4, although that could leave phones open to exploits using the PDF vulnerability.
Apple has repeatedly cautioned against jail-breaking tools, stating that users invalidate their warranties by using the tools and has yet to respond to requests for comment.