Following up on a report from earlier this week, iOS hacker pod2g announced on Twitter late yesterday that he had succeeded in getting his iPhone 4 running under iOS 5.1 with an untethered jailbreak. While no tool for other users has yet been announced, the breakthrough means that those wanting to run the latest version of iOS and unofficial apps should be able to do so in the near future. There is no word yet on whether the exploit is limited to A5 devices like the iPhone 4 or not.
