Att galaxy s4
NB1(whatever that means lol)
Sent from my HTC6525LVW using XDA Premium 4 mobile app
There is no direct root method for 4.4. So, you have to follow Deadly Venom Kitkat Magic Tool.
Using the tool, you would first partial downgrade to MK2, root using saferoot and install safestrap 3.72 (the only working recovery for us). Using the remain steps in the tool, you should be able to flash any ROM of your choice from All things ATT thread