A new version of Redsn0w has been released by iPhone Dev Team. Redsn0w 0.9.7 has been updated to support untethered jailbreak of iPhone, iPod touch and iPad running on iOS 4.2.1, which allows the iOS devices to be jailbroken (hacked) permanently (until the next firmwareupdate), without the need to connect to computer for re-jailbreaking on every reboot,…