Not sure if it is possible. I was trying to find a way of downloading a base ROM of Android and porting it the lg g Stylo(h631). I would love to see CyanogenMod running on this device, but I have no clue on how to program or port programs.
http://forum.xda-developers.com/lg-g-stylo this site has all the info you'll need of you wanna 'flash' a different rom onto your handset
one click root or similar app won't work in some case, you'd better ask for help from Xda developers or you will brick your phone.