LG K4 K120E Unrooted after an update and won't root again
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!