 These applications allow the user to access tweaks, homebrew applications, the root directory and the file system of the iOS device.blackra1n can also perform tethered jailbreaks on the iPod Touch 3G and the iPhone 3GS, if the devices are running OS 3.1.2.When iOS 3.1.3 was released, SpiritJB was released, and provided untethered jailbreaks for both 3.1.2 and 3.1.3.

blackra1n has been superseded by Spirit by "comex".