BLACKRA1N is a jailbreak application
BLACKRA1N is an application that has been created to allow a layman to access the iphone/ipod control system by means of a few clicks, after which it is ' jailbreaked '. This works for the IPhone OS and also for the IPod touch 3rd generation. What BlackRa1n does is customize the firmware of the system while you're in recovery mode. After this, it is possible to install other programs (Cydia, Icy, etc.) that make sure you cannot install Apple-approved applications either.
[YouTube] d5vKfk_j40s [/youtube]