Which lg g pro do you have matters....but its pretty simple man just search the threads about root and flashing cm ....it's the same with any other ROM. Root ....install recovery and flash........you will need madmacks twrp though for kitkat if that's what your going for which I don't have a link right now.The new philz touch recovery works good I think now..I uses it to flash 4.3.1 cyanogenmod last night on my e980.....but like I said root(which I did with kingo and was so easy)then install recovery with freegee on the play store (cwm 6.0.4.7) then backup your ROM......then Install philz touch recovery......then you should be good to go with flashing Cm.If you know how to properly wipe
and install them you are good to go If I helped then your welcome :beer:
Sent from my C811 4G using xda app-developers app