Monster Rom os 4,2,2 for S920 Base CN
-rooted
-switch 3G
-12mp camera
-smooth, etc
Install via CWM or TWRP
1. wipe data/factory reset
2. wipe cache partition, mouns and storage
3. format/cache
4. format/data
5. format/system, go back, advanced
6. wipe dalvik cache, go back
7. install zip
8. reboot system now