LG K4 K120E Unrooted after an update and won't root again I have rooted my LG K4 K120E (2016) a long time ago using KingRoot, however after the phone got an update the phone was unrooted and KingRoot just won't work anymore. What would be the safest rooting method for my phone without loosing data?

EDIT: Tried kingroot and kingoroot again and got a ram dump screen (like BSOD) but the phone is ok
I have figured it out! The update added an OEM lock to the phone (I think) so I had to disable it in the settings! I've been poking through the settings and randomly discovered an OEM lock there. I looked it up and turns out I had to disable it before rooting the phone. So I have disabled the OEM lock (I don't need it anyway) and I am going to try to root the phone again when I come back!