yashsingh1/xdaforums huggingface dataset:
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] skeeterflea:
Thanks Phoenix. I wish I read this before reverting to stock and re-rooting before reloading your TWRP and Lineage.

But thanks for the info and it's noted for future reference.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] joe zack:
i need help aim stuck on this problem...............

C:\Program Files (x86)\Minimal ADB and Fastboot>adb logcat -s recowvery

--------- beginning of system

--------- beginning of main

thankx in advance

v20 t-mobile
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] 3dfxvoodoo:
I just bought a brand new in a Box LG H918 T- mobile on Ebay (Unlocked for any carrier) comes with the last compilation H91810t. Can i Unlock my bootloader and install twrp and Lineage without root?

Thanks!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
you will almost always need an unlocked bootloader and the ability to flash to install twrp and roms which means root is always a flashable zip away.. this newer h918 method can do that, but id make sure it works and is permanently unlocked first (so its easier to return)
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] 3dfxvoodoo:
Thanks so much for answer, according to the guide: "WARNING -This should go without saying, but

you MUST have your bootloader unlocked

(check OEM UNLOCK in developer options AND fastboot oem unlock).

My bootloader is locked, i use custom roms for many years (Cyanogen, Lineage, AOPK, etc). How to unlock the bootloader with the last bootloader version 10t? In Fastboot mode (With LG drivers and working adb and fastboot):

fastboot oem unlock (the latest version 10t is unlockable?)

Thanks again
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
Yes fastboot oem unlock then the guide in the thread (which is needed because the h918 cant use fastboot flash or fastboot boot)
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] 3dfxvoodoo:
Thanks again Phoenix591, I do not want to screw up, this guide?: https://xdaforums.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
No the guide I linked to you earlier.. The guide in this thread (which you linked) will only work for 10j and you will irreversibly (besides LG maybe) brick your phone if you try to rollback to it from anything besides 10k.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] 3dfxvoodoo:
Sorry again Phoenix, another question: According to the link : ....."If you don't know how to FULLY unlock your bootloader -- search. This thread is not here to educate you on unlocking your bootloader"......

What are the steps to completely unlock the bootloader?

(I always unlock my Nexus 4, Nexus 5, Nexus 5x with: 1) fastboot oem unlock (Lose all the data of course) then 2) fastboot reboot 3) Fastboot flash recovery xxxx.img (and install custom rom with twrp or CWM)

again, thank you so much for your answer
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
Basically they mean getting adb/fastboot/usb driver setup, development options >allow unlocking and doing fastboot oem unlock and then fastboot reboot (fastboot flash was removed from the h918 which is why have to use the exploit in the guide)
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cdub1984084:
What about Verizon?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] it'sup:
Is it still possible to unlock the lg v20 with custom recovery isntalled?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] PrimeOG:
stuck on logcat

after adb logcat -s recowvery, it says beginning of system and beginning of main and makes no progress. What do I do
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] joe zack:
ihave same problem but nobody no the answer it seem

i need help aim stuck on this problem...............

C:\Program Files (x86)\Minimal ADB and Fastboot>adb logcat -s recowvery

--------- beginning of system

--------- beginning of main
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cajunzman:
Bump above though im inclined to say it has to do with the software version id like confirmation from one of the more experianced guys.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Zctgamer:
Same

Im having the exact same issue, what software version are you on, im on 10t and am gonna go back to 10j to see if that helps, ive seen a few people comment this but no one even responds, ill let you know if going to 10j helps at all
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Zctgamer:
So Pissed

Ive been trying to get this to work for a few days on h91810t, realized it didnt work on that firmware, tried installing 10j, but tmobile had to have antirollback, is there any work around for this? i only bought tmobile cause i thought it was gonna be easier than att because of them locking bootloaders on the v10. I just really want root, could someone either do something so it works on 10t or recommend me a way to install 10j?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Zacharee1:
Use LAFSploit.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Zctgamer:
Yea I saw that earlier but it seems really complicated, ive rooted tons of phones but alot of this stuff is very new to me, if you could maybe guide me through how to do it properly, I know the xda page gives instructions on how to do it but theyre hard to follow.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Chocl8Surprise:
Dude yes! I'm in the same exact problem! :(:(:(
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] rocketrazr1999:
LGUP worked easily on my H830 But when the tutorial says to go into Download Mode, don't, just stay in regular Boot Mode.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] stewie-droid:
Hello guys. My V20 is arriving within days. I think it has Nougat build on it.

Does this twrp install work on Nougat as well? I figured i would ask since i don't see prerequisite listed and i don't wanna brick anything.

I know with time things change and i see other methods like exploit thread also being listed. Some more insight on this? Thank you in advance.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cnjax:
Probably not as dirty cow was patched long ago, you would need to use the laf exploit method
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Austin2125:
i need help aim stuck on this problem...............

C:\Program Files (x86)\Minimal ADB and Fastboot>adb logcat -s recowvery

--------- beginning of system

--------- beginning of main

thankx in advance

v20 t-mobile

SOMEBODY ANSWER MY QUESTION ON YOU TUBE I THINK IT DEPEND WHAT VERSION IS UR LG EXMAPLE H9180S

stuck on

--------- beginning of system

--------- beginning of main
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
No idea about the g5's arb or lack of, but this exploit requires the phone to be on the December 2016 security patch. You miay or may not be able to roll back to a vulnerable version depending on arb.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Catboy123:
The phone has Anti Rollback, but as far as I am aware it is bypassable. The phone was originally on 20N, and I was able to flash a 20A KDZ to it unlocking the bootloader.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cnjax:
As phoenix stated this exploit was patched a long time ago so unless you're on a security level prior to Dec 2016 which is doubtful, that's why it's not working
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Catboy123:
AFAIK the 20A patch is from November 2016. I'm new to rooting/flashing so you may well be correct that I've missed something, patch-wise.

Do you happen to know of any other ways? All of my XDA and Google searching brings me to the same dirtycow methods.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Vortell:
Anybody with any knowledge on weather dirty Santa works on a bpt (Bright Point) us996? Then if it does what version it needs to be in to do it and if I can just flash standard us996 firmware over it? I have tried posting in the a few other thread about it with no luck. There is info on using dirty santy on us996 but most of it is about standard unlocked version or the ucl (US Cellular) version there is almost no mention if bpt version.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] miguelr4720:
Warning: setcon transition to 'u:r:init:s0' failed (is SELinux Enforcing?)

Error 1: Operation not permitted

Welcome to recowvery! (run-as)

------------

Current uid: 2000

Setting capabilities

Attempting to escalate to root

Current uid: 0

We have root access!

------------

Executing: 'dd' with 2 arguments

1|h1:/ $

---------- Post added at 08:57 PM ---------- Previous post was at 08:56 PM ----------

How to Fix This Pronblem On H830 TMOBILE SOMEONE HELP ME FIX THIS
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cnjax:
dirty cow was patched a long time ago
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] miguelr4720:
How Can I Install This On My LG H830

:confused: Really i downgraded H83020A And Am Still Having The Problem i been Working On Installing TeamWin Recovery All Night And Day and Still Nothing How Can I Install It Then??:confused::confused:
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] IndifferentBear:
i followed the steps for the recowvery, but its hanging at the logcat command. i cannot seem to get an action out of it as it just hangs. the blinking line just sits there.

LG V20 H918

---------- Post added at 07:13 PM ---------- Previous post was at 06:17 PM ----------

i followed the steps for the recowvery, but its hanging at the logcat command. i cannot seem to get an action out of it as it just hangs. the blinking line just sits there.

LG V20 H918
[MENTION=5672995]jcadduono[/MENTION]
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] sxotty:
I have the exact same problem on h830 (I downgraded from 30c with uppercut). Something must have happened. don't think the prior command worked properly, mine crashes to white background tmobile screen then just sits forever. I think everything looks like it should work, but no dice.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] sxotty:
Any suggestions?

As I could not get the logcat command to run (can someone tell me what exactly it is supposed to be doing? It seems like it is just logging a bunch of useless data) I tried to skip ahead. I saw someone else had some problems with the 'exec' package missing and knew it was b/c they did not swap the run as. So I started there.

It did overwrite run-as as you can see. But it did not seem to be able to write twrp fully. I marked it in red. It did say it got root access later though. If it got root access it seems strange I cannot use getenforce which does not give me permissive. As I said the logcat part fails.

I did

adb reboot recovery after the following and it went straight to the OS and skipped recovery. I did reboot recovery again and it went to No Command screen.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] IndifferentBear:
so basically we're screwed?

if so, i'm getting a refund and returning this device. i dont have time for this.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cnjax:
Try lafexploit
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] sxotty:
sad times

So I relocked the bootloader in fastboot, then unlocked it again just in case somehow the downgrade to 20A wasn't enough.

It made no difference sadly. logcat -s recowvery still does nothing on h83020A.

It is a bummer that downgrading does not work anymore.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] sxotty:
Happy times - success

I was talking with the fellow who made easy recovery since this did not work. He made a script that did not do all the checks and it noted I had a mismatch in adb versions though I installed from this thread, perhaps I had another version from something else. Somehow the device retained version 40 of adb which would not allow the commands to complete even after downgrade on device. Anyway I checked the versions included with the script and found one that was 36. This was what I needed. I tried to uninstall adb from add remove programs, but version 40 persisted on the system level (perhaps if I had type .\adb it would have used the local file insted of system file). It was in c:\windows. I deleted that manually.

Then I typed in the normal series of commands mentioned but in powershell (not admin version btw just normal) you have to add .\ before adb on each line. Lo and behold it worked finally. Hallelujah. So I am writing this to let others know that there is hope. I am not sure if all the steps were necessary, but in short, what I did was

1) Downgrade to 20A using uppercut

2) Lock bootloader in fastboot

3) Unlock bootloader in fastboot

4) Find adb version 36 which matched h83020A

5) Type in the normal series of commands according to h918-recowvery-unlock-v20-root-shell-t3490594

Be careful once you get into TWRP not to screw things up. I went straight to the next part and updated to Oreo as I already has all the needed zips including magisk on the SD card.

Then I used

stock-h830-30c-zips-imgs-kdz-2018-08-01-t3845206

To return to oreo but retain unlock and root.

I might then try

277634#*#

. . .Then Scroll Down and Tap on ‘WiFi Test’

Tap on the ‘OTA Setting’ Option

Then Tap on the Big ‘Disable’ Button
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] IndifferentBear:
ill just stay unrooted. i dont have the patience for this, or the time. ill just stick to theming via Substratum and using nova launcher

---------- Post added at 10:54 PM ---------- Previous post was at 10:53 PM ----------

but thank you for taking the time to type all that out. i may try some other day
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jerryspring:
is this twrp compatible with h91810p?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jerryspring:
i keep getting Package 'exec' is unknown. wth?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cnjax:
This was patched a long time ago
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jerryspring:
What can be done? I'm on 10p
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cnjax:
Try laf exploit
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jerryspring:
How did you root yours? Did you fresh flash the 10d kdz then start from the beginning?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cnjax:
I have a H910 and rooted with dirty santa
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jerryspring:
Ever find a solution for the us cellular version to root?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] johnny_bird:
all was fine until i got to the command "adb logcat -s recovery" after that it stopped after the first 2 lines. Looked like this (copied from command prompt window)

C:\Program Files (x86)\Minimal ADB and Fastboot>adb logcat -s recowvery

--------- beginning of system

--------- beginning of main

I tried the whole process over three time each doing the same never getting any further, any clues or help would be greatly appreciated. Thank you.

LG V20 H918h on android 8.0.0
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
This requires the very old december 2016 security patch, which is impossible to revert to on H918's on or past 10p (yours is, since you're on oreo, which is 20 something depending on your actual software version). you need to follow a different process which is exclusive to the H918 because only the H918 can use fastboot oem unlock.

This process, which is explained in more detail here
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] johnny_bird:
Thank you

Thank you, I really do appreciate the response. I am yet to try the alternate method which you have so graciously presented to me. Been a little busy these past few days, but I indeed WILL mosey over to the links which are provided and give it a try. I really miss having a rooted phone and I know that the older a phone model gets over time, along with the forced upgrades the likelihood of there being a root for it diminishes greatly. That is why I have decided that when it comes time to get a new phone (whenever that might be), that the next one will be bought solely based on its ease of root-ability. That, I think will make things a whole lot easier in the future. Thank you again for all of your help. And a thank you as well to ALL of the gurus at XDA for your knowledge and expertise of the Android. Without it, I don't know who I would trust for the correct information on such matters.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] johnny_bird:
Thank you, your suggestion worked like a charm

So I downgraded with the KDZ to Android 7.0.0, ran FWUL on a Windows 10 Enterprise computer, got TWRP put on the Download side, Flashed Magisk, then put TWRP on to the Recovery via the TWRP app on the phone. Backed up the phone with TWRP. Verified the root with a root checking app. I am all rooted and ready to implement and enjoy all of the benefits of a rooted device. Thank you again for all of your help, I am a very happy person right now.:D
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] kudabee61:
I have the us996 but i didnt root it had it remotely done i can refer the guy hes amazing running oreo and stable w root
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] rahimbe7:
when i put this command adb logcat -s recowvery iget --------- beginning of system

--------- beginning of main and stay like that nothing happened please help il using LG H918 10p .
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] cnjax:
This exploit was patched long ago, not going to work on 10p
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] k00lguy105:
im getting run-as: unknown package: exec any ideas?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] androiddiego:
This only worked on the first couple firmware versions. Up through 10j I believe. Beyond that, it won't work. And if your on a V10, it definitely won't work.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jritt:
So I have LG V20 h91820h, will this method work for me? I thought that I had read that my phone could be rooted using lafsploit, but now I can't seem to find the instructions...is there any way I can achieve root on this device?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] pavik62:
How do I put TWRP on version 20h?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] X_BlackBurn_X:
adb: error: cannot stat 'dirtycow': No such file or directory

can anyone give solution to this problem please.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] bennylava:
Can anyone make a Guide to installing Lineage on the G5 in 2021? If you patched past Android 7.0, you're screwed. I'm on 8.0 Oreo, and I just can't downgrade to 7.0 so that I can install a custom recovery. If anyone can explain how to do that, I'd be very gratefully. I so want to run Lineage.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jailedmike:
I would read though this,

https://xdaforums.com/t/guide-tutor...irtysanta-most-variants-noobfriendly.3722278/

Lg g5 is basically the same, tmobile and sprint g5 will not be able to downgrade. The signing key changes on os to oreo and not shared with the other models. You might need to change script a bit for g5 names. I have not checked but I don't think so. On At&t you should use lgup to backup modem partition if you want full bands back. You need it to restore it after unlock. For v20 there is canadian h915 that is used if h910s need modem partition replaced. Not sure there is a Rogers (I think h915 is Rogers) g5 Kdz to get it from.. Otherwise downgrades are the same from g5 through at least v30 including v20... Otherwise I don't have g5 so not sure how else I can help anymore.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] îsââč ønê 01:
i'm in the same position
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] pro_granade:
Awesome. Yeah, Hopefully I can get this working, and I'll see if I can make a precompiled release if it's too difficult, if you don't mind.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] shojus:
Can you download the apk file from online and transfer it to your sd card and install it that way? Just google search "quick boot" or many of the other apk's that do the same thing
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] NotATreoFan:
If I wanted TWRP simply to get root, then do I need to format data to remove encryption first, or can I just flash SuperSU and call it a day?

I'm fairly certain I read it correctly and I can do this, but just wanted to check and make sure. Fought with my phone for hours yesterday after the bootloader unlock to get my SMS back and I really don't want that battle again.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] slayerh4x:
I cant even get to any apps. I am at the very first screen you see when you buy the phone, were you select language, restore from backup etc.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] tnick84:
Pm me the details on how you got in to this situation...what were you trying to do? Will the phone boot up? There is a couple of ways you can get to recovery other than button method. I try my best to help you out.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] rickberg:
I did try the root shell you posted on earlier using recowvery but i was unable to get the chmod 0777 * line to work

I am on sprint but you said it should worknin this post is there a way to get around the chmod 0777 *?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] shojus:
From what it sounds like it's only for someone wanting to have TWRP installed, but I'll wait for the MAN himself to confirm.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] trix4rix:
Fixed my first issue, I wasn't in the right folder. Now I have a new one. see screen shot. Please advise. currently on the crashing Tmobile screen.

Solved! didn't fully wait for several commands to finish. my bad.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] shojus:
Good man! :) :good:
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] justthefacts:
The way I understand is that you can just flash Supersu but you still have to format data after that.

Edit: Now I read it again and your interpretation makes more sense
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Kief_haring:
What does one do after the crash screen? I thought ctrl+C but the whole Logcat thing is extremely unclear...
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] tnick84:
I got in to a similar situation a couple of weeks ago with a stylo 2 plus loaner I was using while I was waiting on my v20 pre order...I owned nothing but Samsung flagship for years..LG is a different less forgiving animal for sure. Lol I learned a lot from that screw up though
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] pro_granade:
I got to the logcat part, but it's just sitting on the bootanimation with http://pastebin.com/4zhQmgjR
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] slayerh4x:
This sucks, after all that stuff of letting people use my device for testing It gets screwed up here.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] NotATreoFan:
Yeah, that's my thoughts as well. For the moment, I only need TWRP to get SuperSU flashed, I'm not worried about the other functions.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] pro_granade:
I don't know if any of this helps understand what's happening with my device, but here you go! :P

http://pastebin.com/ZZA2VNai
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] iquit040:
People are quick to complain when something doesn't work perfectly. Please keep in mind that this is a new phone running a new version of Android. There will be learning curve and hiccups along the way. If you don't want to risk any issues, don't mess with you device / software. That being said. Many devices since Marshmallow require you to wipe/format data after unlocking the bootloader / rooting due to encryption. It is no longer as easy as it used to be when you just installed a recovery and flashed root. I will be waiting til things get fully ironed out but I definitely appreciate all the hard work being put into the development!