SuperSU is the Superuser access management tool of the future ;) !!! SuperSU requires a rooted device !!! SuperSU allows for advanced management of Superuser access rights for all the apps on your device that need root.
Hit thanks on xda!
1.)Update your phone to latest firmware.
2.)Put SuperSu.zip in extcard.
3.)Turn on usb debugging in developer option.
4.)Power off your device, press and hold Volume Down + Home + Power buttons at the same time until you see a Warning with a Yellow Triangle.
5.)Now press Volume Up button. Your phone now is in ODIN MODE (Download Mode).
6.)Open Odin on PC.
8.)Connect Phone to PC using USB Cable.(You will see added message on Odin)
9.)On Odin click on PDA(till version 3.07) OR click on AP(after version 3.09)
10.)Select the recovery.tar.md5
11.)Press on start.
12.)Remove battery quickly after Odin says pass before it boots up.
13.)Insert battery again. Press Power + Volume Up + Home button, and hold till you see the Samsung logo.
14.)If you see a Red Exclamation on the Top Left Corner of the screen, then you have installed CWM properly, and it will open up.
15.)Select Install zip from SD Card.
16.)Select Choose zip from SD Card.
18.)Now scroll down and select Yes.
19.)Now go back to the main CWM menu and select Reboot Now.
20.)Select No/Yes (I have tried with both, it did not make any difference)