By rooting, you get super user permission and ability to run cool apps. Note that this method is different from how you root the International version of Note 2.
1. Download cwm6-recovery-n7100-121014.tar : http://www.mediafire.com/?mouxvj4og7azcow
CWM md5 : 67208cd19e8247af8591a83ca0a39bs2 .
2.download CWM SUPERSU installable ZIP:http://www.mediafire.com/?w3i20sr6r58r8ah ( copy this file into your EXcard )
SU md5 : 010b98d757544d7b2971574951c1d5e6
3.Download PC Odin : http://d-h.st/6Er
4.1.Open Odin and select PDA tab
2.Point to extracted file cwm6-recovery-n7100-121014.tar
3.Now switch off device and reboot in download mode by:
press Vol down + Home +Power, And then, press Volume UP button in Warning Page to enter the Download Mode
4.Connect device to PC and wait till device successfully added to com port (it will turn light blue)
5.Hit ‘Start’ to flash
6.Once it flashed successfully, you can see ‘PASS’ in table above the ID :COM, you can disconnect device from PC
7.Now reboot into CWM by :Switch off device and press Vol Up + Home +Power hold about 5 second
8.Install SuperSu from Play marketplace.
9.Reboot. Done