S4 AT&T rooted 4.2.2 mf3 to CM11?

No, you have a locked bootloader. You can't change the kernel. The most you can do is install safestrap and use only touchwiz based ROMs of the same version. In other words, 4.2.2.
 

Forum statistics

Threads
957,953
Messages
6,975,070
Members
3,163,947
Latest member
aimalee