Asl.dll is the dll error fixer for Blackrain, limerain and other many Apple jail breaking tools. Many Apple jailbraking tools are showing error message as asl.dl missing. When you installed asl.dll file then it shows an error message as icuin36.dll or Corefoundation.dll missing. If you installed these dlls also, it shows another dll error message. You can't fix this error manually. You can fix these errors using just one click with this tool. asl.dll, icuin36.dll and Corefoundation.dll and other dll files are copyrighted by apple inc. These files have been already installed on your computer with ITunes . But apple jailbreaking tools can't recognize paths of these dlls. asl.dll fixer corrects this all paths. Then jailbreaking tools will work properly.