[LG V20 Guides, News, & Discussion] Jesus is God Almighty:
Lets see if I can do this with my old H990N - just to see if it might be possible as most people say it is not.

First step at the moment is being done, if anything it would not be a big loss if it bricks it...

It seems to be some time on the last part, not sure if it has broken already or not. This step could take some time to finish I recall.

The mobile is still scanning the SD card, and I just wanna install the Terminal program... Sigh, I recall it could take some time as well for the system being ready. I have downgraded the mobile to the lowest Android 7 - which was easy enough although hard to recall all the steps. If anything I will just go back to the Android 8 version, so no biggie, if it does not work.

Hmm still not done with the first step... I'll just try again and see what happens. It is at the last part, that some times can take some time to do... I will give it some time this second time... And if it does not work just turn back to Stock A8. Oh, there we go! :P It came through.

Next step is on the mobile... Really if it fails, I can just restore everything as far as I know, as I've done with the other F800K so many times.

First step seems to have done its work! :) Getting report on my computer. Lets go to the next step then ;)

Step 2 finished, so far so good...

Step 3... Ahh we need the drivers... There we go, process ongoing.

Rebooting... Will be interesting to see what it has done or are going to do... Standing on the LG Screen for now, it could take a while. Although who knows how long. I'll give it 15 minutes I think... 00:20.

Hmm, at least the script did seem to do something, hmm it is loading now.... some sound.... animation is on... Uhhhhhh...... He he he. Hmm, I think we are in the system now. YUP! So... now what.... Ohhh, Blue screen :P

Ehh, I guess it did not work so well then. It depends, if TWRP is installed then... Everything is good and there might be some options, who knows. Lets first try to reset it, and see if we get another blue screen after it loads up. Yup... another blue screen... Could be the version of TWRP that is installed maybe, overall, lets try to get into TWRP. Hmm, English warning, interesting to see something else then Korean. Seems to move forward, lets see if we get into TWRP. If so then I could try to make a reset first hand, and try another TWRP version or... just install Android 8 and a kernel... Hmmm, We are now in TWRP!!! :D Asking for password, oh there was something about that. Not sure if I did that correct... I should have made a backup before doing that, lets see what happens. So easy to forget these things.

I think I might have deleted more then I should. Ohh yea, delete and then root I think was the game. Although I don't have those tutorials up so just running from memory at the moment. I might have broken the mobile by what I did in TWRP, not good. we have sound and animation now, it might not have been so bad. :) Ahh here we go with the Encryption unsuccessful... No matter, I think that was mostly a TWRP problem. Blue screen again.... okay... Well lets update to A8!

Not giving up so easily! Okay, Aboot and Recovery unclicked... there was a boot as well, but... I only recall needing to unclick 4 and not 5. So, lets do that for now. So progressing now, thinking thinking... If I recall I can still enter TWRP after this, hopefully. If something did not go bad. Screen making the standard issues in Download mode, no biggie. I wonder which kernel is best to install for this, but I guess I will just try the one I use for the other LGV20. Well... :D Yup so here we see the expected issue of the kernel issue. So everything is as it should be. Lets let it wait for the rebooting and all, and then see if I can enter TWRP. Okay, seems to be done in LGUP!!! Hmmmmmm Well, lets see if we can get into TWRP! ;)

Hmmm, no.... It seems to try to reset it... Okay, I need to think here. Oh yea, I need to install TWRP again. How was it.... Fastboot maybe. Yup, seemed to do it! So far so good. Thinking... Hmmm, okay... nope.... Lets try with the adb...