First of all, yes I have gone through droves of posts on XDA and frankly it’s a mess, but I can tell you that after following a few threads that just refer to themselves in loops, there’s no actual solution.
I have an LG US730 which was rooted and everything was great. I must have toggled something in SuperSU - I think maybe the option to be rooted during boot.
Anyway, now all I get is Security Error and it shuts off. None of the recovery power on switches will work. The only thing I could do is VOL+&- power while the usb is plugged in and it goes to a download in progress screen. Of course nothings happening and I need to remove battery in order to get this powered off at this point.
Anyway, I’d love if anyone has a tool to repair this. LG’s utilities all do nothing at all I think they’ve purged the back-end of older stuff so the programs that should download something and proceed simply wait forever.
galaxy a12: lineage this tutorial: https://xdaforums.com/t/guide-gsi-installing-lineageos-or-gsi-roms-for-a127f-binary-u7.4513051/
galaxy grand prime: i’m not teaching you to bypass FRP. this is a stolen phone.if you ever get it unlocked, and can find a functionnal aromainstaller download: https://xdaforums.com/t/rom-aroma-pre-rooted-stock-rom-g531h-pre-rooted-deodexed-debloated-stock-rom.3551178/
galaxy j7: flash lineage by following this https://xdaforums.com/t/rom-sl-lineageos-19-1-for-j7-2017-pro-alpha.4604345/
desire 530: technically lineage is available but no tutorial and probably unstable: https://xdaforums.com/t/rom-6-0-lineageos-13-0-for-htc-desire-530.4682192/
j3: lineage with tutorial: https://xdaforums.com/t/rom-lineageos-14-1-for-samsung-galaxy-j3-2016-sm-j320fn-f-g-m-unofficial.3667015/
galaxy s5: lineage from this link (no tutorial): https://xdaforums.com/t/unofficial-lineageos-19-1-android-12l.4427639/
moto e4: lineage with vague tutorial from: https://xdaforums.com/t/rom-unofficial-woods-darklineage-14-1-20200913-mod-of-lineageos.4162339/
galaxy s III: locked to verizon so probably not possible, this might work, it might not https://xdaforums.com/t/rom-unofficial-14-i9300-lineageos-21-0-alpha.4648114/
lg us110: couldn’t find anything
lg d415: https://xdaforums.com/t/rom-official-cyanogenmod-11-for-lg-l90.2831541/ maybe
l38-c: couldn’t find anything
us-730: is already bricked as you know
moto x: lineage (no tutorial) https://xdaforums.com/t/official-lineageos-18-1-for-the-moto-x-2014.4255337/
i won’t even try the last 2 what the fuck is this