Just a quick heads-up: the iPhone DevTeam has released the CLI ( command-line interface ) for Corona A5 Jailbreak. The tool was released mainly for debugging, but it’s also fun to play with if you’re one of those people who like to tinker. The tool can be downloaded here and instructions can be found here…
If you want to jailbreak your iPhone 4S or iPad 2, check out Absinthe…