root LG X160 (lg max) lolipop

hi devs

i got a new lg max X160 with induild lollipop and upgradable to marshmello.

now i want to root it to increase the battery life and external game data access and twick the camera and gallery.

i tried framaroot, kingoroot with no luck.

if any one could tell me how to root and flash custom recovery like CWM/TWRP it will be nice.

thanks in advance