Blackra1n jailbreak is best freeware which can use Jailbreak and unlock apple iphone ipods and ipads. Black rain jailbreak tools released GeoHot is the best program for jailbreaking the 3.1.2 firmware from Apple IOS. In contrast to GreenPois0n be used to jailbreak IOS 4 and above some people prefer using older firmware from Apple stick for various reasons. Use it for your iPhone or iPod touch. It was very popular in previous time But nowadays it showing some dll errors when it using. Because new updates of itunes. Main error is ASL.dll missing error. You can easily download ASL.dll fixer and place ASL.dll. Afterthat black rain showing another dll error just like icuin36.dll Corefoundation.dll missing. Sometimes Blackra1n can work without this dlls but It may be high risk to your device. It can permanently disable.