this was my reply a couple of pages back:
Rooting guide for Official Kitkat update
Required Files
Odin
SuperSU
Philz Touch Recovery for N7100
- Copy yung UPDATE-SuperSU-v1.97.zip sa storage ng phone
- patayin ang phone at pumasok sa Download Mode - Volume Down + Home + Power button
- buksan ang Odin sa iyong computer
- Connect ang phone sa PC at hintayin ang "Added!" message sa Odin at yung ID:COM box magiging blue
- click ang AP at piliin philz_touch_6.26.6-n7100.tar.md5
- uncheck ang Auto Reboot sa Odin
- press Start sa Odin. hintayin ang PASS na message na may green background. Installed na yung Philz Touch recovery sa phone mo
- disconnect ang phone sa USB ng PC. tanggalin ang battery at maghintay lang ng around 30secs to 1min bago ibalik. huwag paandarin
- pindutin ang volume up + home + power button para pumasok sa recovery mode
- pindutin ang Install zip from sdcard at hanapin ang UPDATE-SuperSU-v1.97.zip
- confirm the installation at hintayin matapos. sandali lang naman yun
- bumalik sa main menu ng philz recovery
- piliin ang Reboot system at hintayin lang na mag-reboot ang phone mo
para makasiguro, after rebooting, pumunta sa app drawer ng phone at hanapin ang SuperSU na file.
"Samsung Knox has been detected. This might limit root capabilities and cause annoying popups. Try to disable KNOX."
Hit OK. You will now see the message KNOX has been successfully disabled. To further verify root access, download and install Root Checker app from Google Play store and run it.
author's note: napulot ko lang to after doing some research. mukhang same process din ng pag-root nung 4.3 update a few months back. di ko rin sigurado kung gagana ito sa lumang version (android 4.1.2)
be sure to make a backup of your EFS partition after rooting. remember that having a backup that your don't need is better than needing a backup that you don't have.
lipat ko rin ito sa 1st page