I'm just wondering if it would be possible to jailbreak the iPhone by creating and installing a modified IPSW file. If the devs did that, I don't think they'd have to search for a loophole to exploit - they'd just have to find a way to take the sandbox out, perhaps by injecting an application where it would not be affected by the sandbox. That application can then be used to install Cydia. Is it possible to jailbreak it this way? Would it be as feasible as finding a loophole in the software? Why or why not?