Update Galaxy S4 SGH-I337 to CM 10.2 Android 4.3 JB Custom ROM
AT&T Samsung Galaxy S4 SGH-I337
can also now be updated to the latest CyanogenMod 10.2 custom firmware based on Android 4.3 Jelly Bean.
Since this is an early build of the ROM on Android 4.3, you might find
some little bugs. CM 10.2 is based on AOSP and gives you stock Android
experience on your Samsung smart phone. Read this tutorial to install and update your Galaxy S4 I337 to CM10.2 Android 4.3 JB custom firmware.