Installation steps of Xtream Bean, a battery friendly Jellybean Based ROM

1.Download XtreamBean V3, Audio Files Patch and a 4.1.2 kernel (recommended Lupus Kernel)
2.Place the XtreamBean V3 And Audio Files Patch on your SDcard
3.Flash your chosen kernel via Flashtool, then boot your phone to recovery
4.Wipe data, cache, dalvik cache and format /system
5.Flash XtreamBean V3 Then Audio Files Patch
6.Flash Gapps (Optional)
7.Reboot
8.Enjoy!! 

Links:

Download Xtream Bean V3
Download Xtream Bean V2
Download XtreamBean
Gapps
Lupus V8 480p
Audio Files+Su Latest Binary Patch



Source: Xdadevelopers.com