Blackra1n coder George Hotz has released blacksn0w, a new jailbreaking utility that unlocks iPhone firmware v3.1.2 and the latest baseband v05.11.07. The tool now allows users to upgrade to v3.1.2 from older firmware without losing the unlock. The process also enables tethering, allowing the handset to be used as a computer-connected modem even on carriers, such as AT&T, that still block the function.
