CF-Root + odin
In this post I will update the latest few versions of CF-Root, in order to select the one that corresponds with your current stock firmware. That means that you should check in settings which firmware version do you have.
REMEMBER: if you want to involve with custom roms, kernels, themes etc, you must stay up to date with the stcock firmwares. Meaning that you should have the latest firmware installed on your phone.
BEFORE INVOLVING WITH CUSTOMIZATION PROCCEDURES ALWAYS KEEP A BACK UP IN CASE OF ANYTHING GOES WRONG.
It is a .tar file that you flash through odin. You put it at ''PDA'' and you don't touch anything else. Hit ''START'' and in 6-7'' it will be done!
Icecream sandwich >>>