yashsingh1/xdaforums huggingface dataset:
[LG V20 Guides, News, & Discussion] Lgv20ME1:
I will..but i see there is a thread on a stock oreo update for zaf (south africa) that can be flashed and keep root...and also update kernal to some MK20000...but i am unable to find the propper stepps on doing so and the OP had the thread locked (Only ue knows why) so now me (a noob) has no clue how to go abt flashing it and i can see very less support for v 20 exists now so not sure any1 will help me with it.... Maybe time to use lg up and flash stock kdz and forget abt a rooted device....
[LG V20 Guides, News, & Discussion] colski88:
Hi there, if anyone is still monitoring this post then I would appreciate for assistance.

I have everything in place however the command that runs from 'RUNMEFIRST.bat' seems to stall at 'beginning at main' and prevents any files from being transferred.

Does anyone have any advice on how to overcome this?

many thanks
[LG V20 Guides, News, & Discussion] pkrename:
Greetings.... EDITED...

Thanks and bye
[LG V20 Guides, News, & Discussion] Teyr.baz:
root with a locked bootloader

firstly, thank you for this great post. i did all what you said. at the end, i got a lg v20 with root but with locked bootloader. i dont even understand how could this happen. do you have any idea about unlocking the bootloader?
[LG V20 Guides, News, & Discussion] colski88:
Hey Teyr.baz, its great that you have got that far, however I can't root. Do you have any advice on how to get as far as you have? For instance which type of PC were you using, ADB drivers, that sort of thing.. thanks
[LG V20 Guides, News, & Discussion] arsenelupin76:
Hello. my problem is not opening the bootloader method which is written in several places (dirtysanta). the program runs nicely, but once it finishes, the phone will continue to vibrate and will not enter "twrp" mode. My device: vs995 verizon. Thanks.
[LG V20 Guides, News, & Discussion] newkah:
Help solve the problem

Hi, I have a H990 phone and I unlocked and rooted it through the above tutorial. Then I installed Orio rom. After a while, I decided to go back to Rom 7 and forgot to do the abootbackup file via twrp to go to Stoke ROM, then I flashed Rom 10d through the lgup program ... Unfortunately, the phone remained on the LG logo after booting. Is the phone broken? What should I do? Thanks for guiding me.:
[LG V20 Guides, News, & Discussion] MR.EXCEPTIONAL:
Solved!
[LG V20 Guides, News, & Discussion] ivaneris:
need help

sorry noob question..

i've followed the instruction, but, after applypatch (it seems success), no prompt from runmefirst.bat, tried the step 2, can't failed to produced backup, fastboot --> flash recovery failed

any suggestion?

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

solved : need a nougat firmware(10e or older)
[LG V20 Guides, News, & Discussion] Jacky_Chua:
Hi all, I have a problem on the step 12. Can anyone help me?

When I entered the following command into Terminal Emulator, it says can not open the path "/storage/emulated/0/dirtysanta". How to solve?

12. Type "applypatch /system/bin/atd /storage/emulated/0/dirtysanta" into Terminal Emulator

Edit: Solved. Since the terminal emulator do not grant the access right for Storage so it can't access the dirtysanta file. I give it the access and now issue solved.
[LG V20 Guides, News, & Discussion] munirshah77:
Hello. I have a lg v20 H990N. I flashed TWRP by dirty santa method and wanted to go back to stock. As per the instructions on the link https://xdaforums.com/v20...-h990-t3624296, I used method 1a for going back to stock. I ran the code as mentioned in the method while using my backed up "abootbackup.img" but I accidently ran the code twice.

Code:

dd if=abootbackup.img of=/dev/block/bootdevice/by-name/aboot

sync

sleep 30

sync

After booting to bootloader. this is what I see written on the boot loader screen.

___________________________________

Welcome to fastboot mode for bootloader unlock:

*Quick Guidnance

1) Read Device Id

fastboot oem device-id

2) Write unlock key

fastboot flash unlock unlock.bin

3) Check boiotloader is unlocked

Fastboot getvar unlocked

*How to exit fastboot mide

USe "Fastboot reboot' command if fastboot is available

________________________________________

This is the meassage that pops up in fastboot. I can use fastboot but can't use "fastboot flash recovery twrp-3.0.2-1-h990.img" as it exits with error that remote: device is locked. I can't flash kdz with lg Up as Lg up says " there is no haadset connected". TWRP recovery is also not boot neither is the nougat rom that was installed. More \over my device is shown as "Kedacom USB device " in device manager in fastboot mode. Not in Com ports.

It apperas that my bootloader has locked somehow after flashing abootbackup and I can't unlock it as h990N is not supported by LG to unlock bootloader. screenshot attached.

Please help!!!
[LG V20 Guides, News, & Discussion] sonar77:
Back to stock

If you want to install a kdz file winth LGUP you have to enter DONWLOAD mode not enter bootloader

https://www.hardreset.info/devices/lg/lg-v20/download-mode/
[LG V20 Guides, News, & Discussion] munirshah77:
Thanks for your reply. I can't enter download mode. Whenever I press volume down key with inserting usb cable I go to bootloader unlock screen. I can't boot to recovery or stock rom. It is me the red waning as in the screenshot in my post. In the bootloader unlock screen, no com port is shown. Infact I only see Kedcom USB device and fastboot works there but no ADB. Since no com port is shown, I can't flash anything with LG up or Lg flash tool. I have tried to uninstall the Kedacom driver, turn off internet so that windows can;t install it, choose update driver in device manager, select it as com port and choose LG mobile USB device. even by forcing it as a com port it is not detected by any LG flash software. In LG up it shows as a unknown device and thus I can;t flash it. I have tried to follow this guide

https://xdaforums.com/lg-g5/how-to/bring-lg-g5-to-life-download-mode-lgup-t3565508

but in LG flash tool my phone is not detected even if I select it as COM41 by forcing the driver as a com port as mentioned above. I have no hope in sight. Please help!!!!!!!

Edit: I am the most stupid person in the entire world. You have to press volume up & insert cable to go to download mode and I was pressing volume down and thinking download mode is not working while it was working. Just recovered the phone after agony of 10 days
[LG V20 Guides, News, & Discussion] pradeeppk:
I am using H990DS Indian varient, nougat firmware 10c or 10e is not available for indian varient, only 10f,10g,10j and 20a are the available firmwares. can i use any of thes nougat firmwares to unlock the bootloader, or any other alternative suggestions?
[LG V20 Guides, News, & Discussion] cnjax:
In order to use the dirty santa exploit you have to be on a security patch prior to Dec 2016
[LG V20 Guides, News, & Discussion] pradeeppk:
Thanks for your quick replay.

Does It means my H990DS remain unlockable.

Or can i flash firmware for H990DS of any other region like Philippines or Singapore, 10b and 10c firmwares are available for that region.

Also let me know the procedure. which tool is better for downgrading, official LGUP or patched one. Tried official LGUP tool for downgrading in refurbish mode and it throws an errror like "unable to refurbish your model". Extracted LGUP_common.dll placed in LGUP/model/common folder for detecting my model.

which option can i use for downgrading, Refurbishing or Upgrade?
[LG V20 Guides, News, & Discussion] pradeeppk:
Sucessfully downgraded and flashed twrp. But couldnot find backup files of boot and aboot in adb folder , any idea were it stored
[LG V20 Guides, News, & Discussion] enformic:
Should be wherever you put the Dirty Santa files.
[LG V20 Guides, News, & Discussion] eadik:
did not work

Hi, I made it step by step. After step 12 is done, nothing happens at RUNMEFIRST.bat console. I tried it two times. it happened the same. first time with H990ds10c_00_OPEN_TW_DS_OP_1214.kdz, the second time with H990ds10b. Anyone an idea??
[LG V20 Guides, News, & Discussion] sbacham:
I have hardbricked my phone. Qualcomm qdloader9008 when I connect to pc. no booting,no vibration,no download mode.

I have tried to flash kdz partitions with qfil but no luck.

I read somewhere that Qualcomm boot process goes like this.

pbl→sbl(xbl)→aboot→laf

My doubt is that,our lg v20 has xbl,xblbak,xbl2,xbl2bak.

so to flash xbl,do I need to flash all 4 xbls as above mentioned???
[LG V20 Guides, News, & Discussion] dividead:
How long is step1 supposed to take? I'm back to the earliest version of android on my phone, I think I was able to do everything up to and including step1 but I never get a message to run step 2 in the first cmd window.

On the phone I ran the command to applypatch...., I got a warning that the file size differ, it took 5-10 min, I got an mmap... , exploit (patch)..., currently..., madvise..., madvise..., /proce/self/mem..., exploited.... and now it seems to be done and it's letting me type another command in terminal but on the first cmd in windows (runmefirst) I don't get any message to go to step2.

Update1: I ignored the fact that there was no prompt and after 30min I followed the rest of the steps, then I followed the install instructions for LOS 17.1 and as far as I can tell everything is working as well as it's supposed to. If you follow LOS 17.1 instructions to the letter twrp will be replaced with lineage's own recovery. I only realized this only after I did and I have no idea if it would work with twrp.

The shortcomings of current LOS 17.1 without any other mods are that it does not treat the second screen as a second screen, can't access the hifi dac as far as I can tell, the camera does not have manual controls and can't access the wide cameras and the LOS browser sometimes does weird stuff with video but it works if you close the screen and open it back up.
[LG V20 Guides, News, & Discussion] joezer:
stuck on booting twrp

Hi

I have a LG v20 H990DS (taiwan) and started the entire process with the intend to install lineage os.

Don't have heaps of experience, but did root and install custom roms ~3 times before on other phones

Hence I followed the steps mentioned on the first page

step 1 - step 16 all went fine...

Step 17 (reboot in TWRP) is where I got stuck

i.e. I got the screen where I had to press twice yes, then it appeared to reboot and now the only thing I can see is a grey/white/black lined screen

It does make a n LG sound as if it was starting, but screen remains static noise till a blue screen pops up (see attachment)

any suggestions for next steps?

I tried removing battery, tried connecting to usb again,..

beyond that the phone does nothing

-EDIT

Was able to start in fastboot and it says

Variant - msm8996 64GB

Bootloader version -

Baseband version -

Serial - LGUS996c21f7e4

SIGNING - production

SECURE BOOT - disabled

Lock state - locked

Got the idea I must have used a wring file for my variant? H990ds TWN?

Ive used twrp-3.0.2-1-h990

EDIT2:

I was able to restore the phone with LGUP

will give it another go - though don't se anything wrong

should I try installing a rom from eg Australia instead of Taiwan => ie LG allows us to download multiple kdz's fro same phone by the looks of it
[LG V20 Guides, News, & Discussion] Worschtebrot:
This whole Thing is so ****ty described for Users who are no PC/Mobile Freaks.

If i would do this, i would explain every ****ing single Step.

So i cant use this.
[LG V20 Guides, News, & Discussion] weyromon:
Leaving the kernel Stock

What will happen if i dont flash the kernel?, any kernel that i try has a lot of bugs on my H990T, thats why i ask, if i leave the kernel stock everything should work right?, Btw thank you for the guide
[LG V20 Guides, News, & Discussion] MAILCOMX:
working???
[LG V20 Guides, News, & Discussion] varta:
Hi all, please can someone help me how to get my H990DS running stock Oreo 8.0.0 rooted, easiest way possible? I don't need any fancy features or custom roms, my only goal is to force the quad dac into high impedance mode.

Running `fastboot oem unlock` doesn't work. With the method on page 1 I get stuck at downloading the DirtySanta files as they are not available at that link. Thanks in advance.
[LG V20 Guides, News, & Discussion] bepp67:
Goodmorning everyone. I have two questions and I apologize in advance if they have already been asked. 1) after applying dirtysanta, if I want to reinstall a stock rom do I have to apply method 1a (or 1b) or can I start the phone directly in download mode and then flash the rom with lgup?

Question 2: after applying dirtysanta if I want to install lineage 17 or better 18 how should I do? I ask because I have tried several times from twrp (deleting first date, cache and system ..) but I have not succeeded. Thank you so much
[LG V20 Guides, News, & Discussion] Ardiakz:
What command prompt is this? At step 3? Or anything else? I got stuck here
[LG V20 Guides, News, & Discussion] bepp67:
Guys I ask you for help. my phone is always locked. I have successfully applied the dirtysanta guide several times, returning to the stock rom according to method 1a without any problem. I also changed computers. I have downgraded with multiple firmware versions (before 2017). Installed several kernels, supersu and magisk etc etc but if I go to check with the command "fastboot getvar unlocked

unlocked: no

finished. total time: 0.058s "I always get this answer. I don't know what to do anymore. If anyone knows a method or where I can possibly go wrong please tell me. Thanks
[LG V20 Guides, News, & Discussion] TheArk86:
LG V20 990N

Please Some one Help Me!!!

I have the same problem of the user "wma2wma3":

Every time, with every Firmware at the step 8: Type "run-as con" i have this:

C:\WINDOWS\system32>adb shell

elsa:/ $ run-as con

run-as: Package 'con' is unknown

254|elsa:/ $

Please help me!
[LG V20 Guides, News, & Discussion] Doolb:
I have expirience with rooting multiple different android devices (at least 8-10). But htis time with the LG V20 I´ve got lots of trouble...

I´ve did anything exactly according to the list. But after i followed step 12. nothing happens.

RUNMEFIRST.bat console never prompt´s me to run step2.bat.

Should I follow step 14 anyway, start over again from step 1 or how should I proceed from here?

Yesterday I´ve waited for 15 minutes and nothing happened. I´ve followed the next step from the list anyway and bricked my phone. Cheerfully I managed to restore it to stock (H990ds10d_00_OPEN_AU_DS_OP_1216.kdz) with LGUP. The things missing are the info about the serialnumber (S/N) and the bluetooth adress in hardwareinfo. The dialer-code *#06# tells me both IMEI`s.

My setup:

Phone: LG h990ds with H990ds10d_00_OPEN_AU_DS_OP_1216.kdz (Android 7.0, Security Patch-Level: 1.12.2016) Software version: V10p) firmware installed. I had to downgrade the phone to this firmware, since it had android 8.0.0 with the Security Patch-Level: 1.12.2019 and the Software version: V20b-TWN-XX on it when I got it from ebay. (I´ve photographed the original Hardwareinfo and Softwareinfo).

PC: Lenovo ThinkPad T500 with Microsoft Windows 10 Professional (x64) Build 19042.844

Please help me
[LG V20 Guides, News, & Discussion] mario_liman:
https://xdaforums.com/t/bounty-thre...ed-by-emdroidle.3493062/page-31#post-72716640
[LG V20 Guides, News, & Discussion] Doolb:
Thank you so much. This worked for my phone finally!
[LG V20 Guides, News, & Discussion] MrKartupelis:
I had to do instructions twice because I did "fastboot reboot" after step2.bat ... Screen got weird, and I couldn't boot fastboot again. Only a new KDZ was able to recover afterwards.

Instead of doing fastboot reboot, just take out battery after flashing TWRP twice. Hopefully someone sees this before unlocking.
[LG V20 Guides, News, & Discussion] Btrivette:
I hope someone can assist. I’m doing this to unlock the bootloader to install LineageOS on my v20 h990n. I can’t get past step 7:Run "step1.bat" <-- Wait until you can type something again. I’ve followed every step to the letter and even restored the pre 2017 security patch. The window closes on its own and does not let me type the next step. I’ve ran it from the command line and it will say something like multiple devices/ emulators, I’ll list the devices and I’ll just see the v20 but when I run the RUNTHISFIRST it will show the v20 and emulator-5554, this is the only thing I can figure out that can help. I’ve restarted, used a different pc, renewed the debugging on the v20 and tried several times but is stuck. The device I’m trying to root is a v20 h990n. I’m running the latest windows 10 Ive made sure adb and fastboot work correctly I do have a old Linux computer running manjaro lying around but haven’t tried using it. Any assistance or suggestions are much appreciated.
[LG V20 Guides, News, & Discussion] cmcube:
I did the steps in this main page about 2 years ago with success. I have used stock recently but wanted to try the LOS 18.1 since LG is closing down.

I tried the whole day using the same steps from before with no success. I am only able to boot with the static screen. The RUNMEFIRST.bat is not working for me. I managed to solve this by using the LOS 18.1 default recovery and then following the usage instruction for LOS 18.1 installation here

I just wanted to share this to everyone especially if you want to use LOS 18.1.

I hope this would save you a day! LOL
[LG V20 Guides, News, & Discussion] noosbux:
I can happily report a successful unlocking of the bootloader and customROM install (de-googled LOS "/e/-OS").

I had to downgrade stock from 20 something to 10c first. Only thing in the process was that RUNMEFIRST.sh did not come up with a prompt . Ihad been waiting for 25min, the terminal on the phone came up with the prompt though. I simply opened another terminal tab (using Linux) and went on with step2. I flashed the latest version of twrp here.

Eventually, the ROM and Magisk were installed.

Thanks a lot for this to all involved!
[LG V20 Guides, News, & Discussion] Galoware:
My lack of knowledge caused me to get stuck in almost every point of the guide, but searching and reading this thread I finally got it.

My dear v20 thought his retirement was coming ... not today :)

I just installed LOS 18.1 without problems

Very thankful!
[LG V20 Guides, News, & Discussion] Epifistu:
Hi, could you elaborate on the issues that you faced and what you did to solve them? I would be very grateful as I'm about to go through the same procedure.
[LG V20 Guides, News, & Discussion] xxmpwokki:
[SOLVED]...... by writing erlier version of .kdz with uppercut.

I receive purple broken screen with stripes after performing step 16 with flashing TWRP and erasing user data. Phone reboots with broken screen.

Or earlierif reboot after step 12, flashing patch inside phone.

Need help or explanation should I go on try to flash this phone or try return to seller, it is refurbished.

Ill describe steps in next message.
[LG V20 Guides, News, & Discussion] xxmpwokki:
[SOLVED]...... by writing erlier version of .kdz with uppercut.

My security patch level is December 1, 2016.

Instruction doesn't say before which YEAR it must be.

I use H990N10e_00_OPEN_HK_DS_OP_1208.kdz

with UPPERCUT. It returns phone to working state after failed attempt.

On windows RUNMEFIRST.bat

reports BEGINING OF CRUSH at the end of writing patch.

is this normal or something is wrong?

I dont receive any other error messages during commands execution.

But after i confirm Delete all user data twice phone reboots to broken screen.

It is even slightly broken during fastboot mode after stage2.bat. It has purple stripes at the top, but it works.

Ony terminal from Jack Palevich shows untrusted app when

#id.

Other terminals dont.

And it reports this even with fresh kdz and erased data.

So this is strange.

What causes fail?

Do I nee to downgrade or try another kdz?

Please need advice.

Detailed steps
[LG V20 Guides, News, & Discussion] xxmpwokki:
Made my way to TWRP!

Something from following worked:

1. Flashed different .kdz firware with uppercot. [probably this helped]

2. Boot to recovery and cleared data directly after wrighting firware.

3. Send 3 times TWRP file (but this was done before).

It would be much better if first post had this advice and I didnt spent all day figuring out this.

New user may not know is it safe to flash different .kdz file.

And it is not very clear how much different it must be.

Files for h990ds may not work for h990n. Much newer version may create more problems.

Im glad it finaly worked!

One more step to free from bloatware and google`s clingy hugs.
[LG V20 Guides, News, & Discussion] Ice Fire:
I intend to go back to stock because it seems that i wiped my H990DS to much while changing the rom and removed my ability to use the fingerprint sensor.

Now i am stuck at LGUP, which i already enchanced with uppercut, because even though LGUP should be for all devices LGUP starts as LGUP (US996) yet the device that is recognized as behing connected is my H990DS.

I also have an US996. I dont know if that could be the case but (besides the DLL just behing wrong) could the driver for the US996 be loaded when LGUP is started right befor the H990DS is recognized.

If it is the dll please point me to the proper dll i downloaded different once from LG Firmware. I also deleted LGUP and or implemented he dll in multiple configurations.
[LG V20 Guides, News, & Discussion] Epifistu:
I don't understand your post in its entirety. But the opening post of this thread says the following. Maybe it helps?
[LG V20 Guides, News, & Discussion] ad4xda:
With my H990DS, something very strange happened when I followed this tutorial. I did manage to pass each and every step successfully.

When all was 100% done, I wanted to flash Lineage 18.1 (Android 11) but TWRP said the ROM, which is for H990*, is not for my model.

TWRP said my model was " . " !!!

I do not know where this could come from... :-//

Could someone help me ?

Thanks a lot in adv.

E3004 as shown below
[LG V20 Guides, News, & Discussion] sev7en:
Hello,

the errormessage I have "run-as: unknown package: con"
[LG V20 Guides, News, & Discussion] sev7en:
Same problem of mine.
[LG V20 Guides, News, & Discussion] ad4xda:
Please check step 8 :

Type "run-as con" <-- If you get unknown package error, means your latest security patch patched it out; go back to step 3. LGUP should be able to downgrade you to an earlier firmware update.
[LG V20 Guides, News, & Discussion] ad4xda:
Please check step 8 : Type "run-as con" <-- If you get unknown package error, means your latest security patch patched it out; go back to step 3. LGUP should be able to downgrade you to an earlier firmware update.
[LG V20 Guides, News, & Discussion] fire_qc:
I can't use LGUP but I've installed Salt. So now, how can I downgrade the firmware with Salt??
[LG V20 Guides, News, & Discussion] hungtinglung:
use LGUP + uppercut to flash kdz file.
[LG V20 Guides, News, & Discussion] fire_qc:
Maybe I'm not clear enough. I can't use LGUP, I'have no Windblow$ here, only Linux. So how can I downgrade the firmware with Salt?
[LG V20 Guides, News, & Discussion] duhovni89:
I stuck on terminal Dirty santa could not open system bin atd...??

WHat to do
[LG V20 Guides, News, & Discussion] LucasRoms:
I have a LG V20 H990DS. And absolutely degrade from the nougat factory ro

m as the drives to follow, and always in the terminal emulator of the terminal it throws me "Can't analyze" Bin "as the byte count" it should be noted that I update different nougat Roms and I continue with the same drawback, I don't know if it is for the reason that I select "Oem Unlock" from the development options next to USB debugging. From now on who can guide me, thank you very much. I followed everything to the letter but I am used to selecting "Oem unlock" for security.
[LG V20 Guides, News, & Discussion] hungtinglung:
https://xdaforums.com/t/bounty-thre...ed-by-emdroidle.3493062/page-31#post-72716640
[LG V20 Guides, News, & Discussion] nostupidthing:
v20 0h910 user, flash h910-10r.zip then able to flash los 18.1

otherwise kernel crash modem problem blah blah blah
[LG V20 Guides, News, & Discussion] nostupidthing:
did u solve this problem?