[kikofv_cesar]

si no te quieres complicar mucho instalando un cfroot por odin puedes realizar este metodo que esta sacado de XDA
Rooting

• Download this File first and put in your SDCARD
  - CWM via stock recovery or download zip from http://clockworkmod.com/rommanager
  - SU-Busybox-Installer.zip
• Reboot to recovery.
• Choose apply update from external storage.
• Choose CWM.zip and wait until CWM recovery appear.
• Choose install zip from sdcard or external SD
• Choose and Install SU-Busybox-Installer.zip
• Reboot
• You are done and now your device is Rooted

Unroot

• Download this File first and put in your SDCARD

• 
  - CWM via stock recovery or download zip from http://clockworkmod.com/rommanager
  - SU-Uninstaller-Signed.zip
• Reboot to recovery.
• Choose apply update from external storage.
• Choose CWM.zip and wait until CWM recovery appear.
• Choose install zip from sdcard
• Choose and Install SU-Uninstaller-Signed.zip
• Reboot
• You are done and now your device is Unrooted

PD. donde dice SDCARD se refiere a la memoria interna aunque tambien te vale en la microsd