You just can’t keep the Dev Team down. Just hours after Apple officially released iOS 5.1, it’s already been jailbroken. But as usual with these 0-day jailbreaks, there are some caveats.
The iPhone Dev Team has just announced that they have updated their popular Redsn0w jailbreak tool to allow people to run unsigned code on their iPhones, iPod touches and iPads. But there are some drawbacks.
First of all, if you’ve got an iPhone 4S or iPad 2, you need not apply. The A5’s security against jailbreaking is a lot beefier than previous devices (expect this trend to continue with the A5X) and Redsn0w can’t crack it.
Secondly, this is a tethered jailbreak, meaning that every time you power off your device, you need to connect your device to a computer to boot it up again if you want it in jailbroken state. A little inconvenient, but not the end of the world.
Look for our official jailbreak tutorial later today, but in the meantime, you can download Redsn0w 0.9.10b6 here, and our old tutorial on jailbreaking iOS 5.0.1 for Redsn0w should be roughly compatible with the new update. Best of luck!