I have a doubt, when you say: "...just flash the kernel in recovery", it means this is a kernel mod? i want to try this but i dont know the requirements! my phone are the D855 Europe/International version 32GB/3GB, have the 5.0 Lollipop Stock ROM, rooted, have TWRP but doesnt have Unlocked Bootloader, so...this mean i cant flash it? or is based on stock kernel and have no problem to do that?
and, if i backe'd up all system, check all boxes in TWRP i can restore it in case of fail? Thanks
(i really have some dificulties to o this on LG phones, i dont wanna brick my device, if was a sony im not affraid because sony is no problem...but LG is hard!)