[18.06.2012] CF-Root 6.3 - SuperSU+CWM5.5+CWMManager - xda-developers
Galaxy S III Galaxy S3 GT-9300 root and kernel.
Check your device model ! Settings -> About device -> Model number. This stuff is made for the GT-I9300 and GT-I9300T, if your model number has a suffix, it may not work, or if it is a totally different model, it will not work (may even brick) !