Do you wanna try ? Let's follow this tutorial..Restart the phone and go to CWM by pressing Volume Up + Home + Power Key.
Install zip -> Search TWRP_v2.8.5.0_royss_RC1.zip
Wait until the installation is complete and reboot.
But if you have not installed CWM in your device, follow this tutorial..
(you need PC/Laptop and odin to do this)
Open Odin.
Reboot phone in Download Mode (press and hold Home + Power + Volume
Down buttons).
Connect phone and wait until you get a blue sign in Odin.
Insert TWRP_v2.8.5.0_royss_RC1.tar.md5 to PDA.
Make sure re-partition is NOT ticked.
Click the start button, sit back and wait a few minutes.
Wait until the flashing process is complete.
If the recovery mode changed to be like these screenshots, then you have successfully installed TWRP.
Bug :
Can't set brightness
Lemme know if you find another...
Original post
DO WITH YOUR OWN RISK !!!