Filed under: CellphonesThis one's definitely not for the casual iPhone unlocker, but if for some reason you're looking to toy around with a couple of different firmware versions at a time, you can now apparently set up a dual-boot system of sorts on the phone. As Jonathan "NerveGas" Zdziarski notes in his how-to, the hack in question has actually been in use by the iPhone Dev Team for "several months" now, but he says that "now that several more advanced techniques have been developed," they've decided to let it loose for all to use. Needless to say, there's some partition-making and a good deal of command line work involved in the feat (all of which could cause you some s
