updated 10:00 am EDT, Thu April 3, 2008
After some delay, the iPhone Dev Team has published the Mac OS X edition of the PwnageTool, a hacking program for iPhones. The software can both unlock devices for third-party carriers, and jailbreak them for native applications; because PwnageTool is able to execute unsigned code, however, its creators claim that it will be able function with any future iPhone firmware, including custom-made editions that can be synched through iTunes.
Traditionally, the problem with iPhone hacking tools has been that as Apple has upgraded the firmware, it has closed off security vulnerabilities that were the basis for hacks. The Mac PwnageTool is a free, 23MB download; a Windows version is expected within the next day, pending the results of final testing.