Cannot Root ATT Galaxy S4

[Garrett Beaver]

I am having a issue where I can`t root my S4. I have tried motochopper and Odin. Motochopper says "Success and then Failed" and on the phone, the exploit attempt is blocked by Knox. Odin Fails to write to the phone even when i have debugging turned on. I am running Android 4.3- SGH-1337- Baseband: MK2

 

[Golfdriver97]

From what i have heard the lasted build version makes rooting hit and miss. Even XDA is having a hard time with Knox.