Hacker George Hotz appears to have found a way to jailbreak and unlock the iPhone 3GS.
The 19-year-old Hotz, better known as GeoHot, may have found a hole in the iPhone 3GS boot sequence, which will allow hackers to unlock the device.
The crack comes just days after the release of the new iPhone. Previous jailbreaking hacks have sometimes taken weeks.
Details are hazy, however. Hotz has posted a screenshot that appears to show a custom command inserted into the iPhone’s iBoot, implying that signature checks had been bypassed, according to one explanation in the comments of the post. If so, it’s the first step in jailbreaking the device.
In addition, the just-released UltraSn0w unlock should also be compatible with the iPhone 3GS.