How to Root I337UCUFNI1 4.4.2
1. Take the NI1 OTA update. (Should the update fail see troubleshooting section below).
2. Place your phone into "Download Mode" (press and hold the "Home", "Volume Down", and "Power" keys until the phone powers on and displays warning screen, then press "Volume Up" key).
3. Flash the I337_NC1_Stock_Kernel using Odin's PDA slot(AP in Odin v3.09+).
4. Root using Towelroot-v3.apk(internet access not required).
5. Power off then boot into "Download Mode" again.
6. Flash the I337_NI1_Stock_Kernel also in Odin's PDA slot(AP in Odin v3.09+).
7. Install SuperSU to manage root access. Done!
LINK
TOOLS & PROCEDURE
Z3X Samsung Box
Micro USB Cable (CA-101)
Check USB Debugging in Settings
Click Allow when software prompt
Flash I337_NC1_Stock_Kernel
Click Make It Rain Button
Install SuperSU
Click Ok to Disable KNOX
Click Reboot
Flash I337_NI1_Stock_Kernel
Tap Grant
Check New Security Then Click Unlock
No Need to Repair IMEI hindi po na corrupt
Finish
