yashsingh1/xdaforums huggingface dataset:
[LG V20 Guides, News, & Discussion] maveric cheng:
error: cannot open 'twrp-3.0.2-1-h990.img'

I got stuck on step 16 wherein i cannot load the twrp using the said commands in step 16.
[LG V20 Guides, News, & Discussion] lallolu:
Will this root method work for oreo?
[LG V20 Guides, News, & Discussion] cnjax:
Developer has moved on to another device, so it may or may not work
[LG V20 Guides, News, & Discussion] Redline:
Probably not, since security was increased in Oreo. It's also unknown if you can use KDZ Writer to update all partitions except /data while keeping root.

Also, he hasn't necessarily moved on. He commits now and then on the v20 Gerrit.
[LG V20 Guides, News, & Discussion] desireless:
Hi, may I ask what KDZ are you on?

I upgraded my phone using H990ds10i KDZ file and there was a prompt to tell me to reset the phone and now I have lost root :crying:
[LG V20 Guides, News, & Discussion] Chicken 14:
Hello everybody,

It's been a long time I visit the xda website about root, kernel and others rom for my different phone. And now, I decided to subscribe in the website for ask the community a weird situation I have.

I have a "supposed" LG V20 H990DS (when I check the IMEI, the regions is ARE - United Arab Emirates - same things to the LGE developers website) and I tried to root with the great thread "DirtySant comes to H990". In my previous V20 H990DS, it was easy (replace by my actually v20 because of burn screen) but with my new v20, it's impossible to used this method.

I succeeded the installation of TWRP but when impossible to boot the device on the system. (It's just block to the LG logo)

I remark something when I pass into "fastboot mode" and I saw that the serial number of my phone is "LGUS9969d0149a" (during the dirtysanta root).

Because of that, I think my bootloader is lock (I check with fastboot) and I can root my phone.

Have you ever encountered this problem ?

I post my problems in the LG V20 Discussion but [MENTION=4201835]cnjax[/MENTION] told me to post it here. I think my engineering aboot was used to unlock the bootloader and it came from a 996.

How is it possible ?

Edit :

just a return about my problems.

I refurbished my v20 with the LG PATCHED (PARTITION DL with a Official KDZ) and I restart at zero the dirtysanta process.

And I have the same problem. Now, I just finish the installation of the kernel and the SuperSU. My V20 is blocked in LG Logo moving (I'm waiting since 30 minutes).

With the LGUP Patched, I needed to do the manipulation a lot of times for my device was recognized like a LGH990DS.

But, I notified something. Before the dirtysanta method, in fastboot, my device was recognized like a LGH990DS (with the "fastboot devices" code).

But during the dirtysanta method, when I am in the step 2 and my device restart in the fastboot mode, I see the serial number is LGUS9969d0149a.

So, I know now it is during the root method that my v20 passed like a LGUS996.

What do you think ?
[LG V20 Guides, News, & Discussion] desireless:
Hi all, I performed the steps until step 17. I thought it was successful but I was asked for a security password. I have never ever set up a password on my phone.

Any help with this? Thanks.
[LG V20 Guides, News, & Discussion] Chicken 14:
Hi [MENTION=709508]desireless[/MENTION],

It is in recovery mode ?

About my problem :

I think I do a very bad thing. I wanted to take advantage of dirtysanta method to modify the partition "boot" and "aboot" (and install a original kdz) and I erase this two partition. Now, my device can't boot and it don't turn on no matter what I do.

It do a life sign only if I plug it in my PC without battery (I have a battery symbol with a red interrogation point) or when I press the button power, the device vibrate one time.My PC don't recognize my v20 (It do like nothing plugged on him).

How can I restore the partition ?
[LG V20 Guides, News, & Discussion] cnjax:
It's bricked
[LG V20 Guides, News, & Discussion] jclendineng:
Yes, you did a very bad thing. That my friend is now a paperweight. You may be able to find a way to flash partitions again, but for future reference do not wipe things you aren't sure about. For that matter with this phone, do not even attempt root if you don't know what you are doing, it's very easy to brick.
[LG V20 Guides, News, & Discussion] yula16:
This is not working for me at all here.

LG V20 - H990DS, I did all the steps as it said. I did the whole RUNMEFIRST stuff, and did STEP1 script, but all I'm getting is permission denied after it tries to chmod on the files.

100777: Operation not permitted

the directory

/data/local/tmp

DOES NOT EXIST, nor can I create directories for it there because it's system root folder. I tried instead changing it to do it from my SD CARD but it wont let me change permissions of the files or folders there because said error above when chmod is used.

also trying to do

adb shell /sdcard/tmp/dirtycow /system/bin/run-as /sdcard/tmp/my-run-as
/system/bin/sh: /sdcard/tmp/dirtycow: can't execute: Permission denied

does not work because permission denied. YOU CANNOT EXECUTE COMMANDS OR ACCESS DIRECTORIES WHERE YOU DON'T HAVE PERMISSIONS, THAT'S JUST HOW POSIX FILESYSTEMS WORK.

Perhaps the instructions aren't clear enough or it's missing a step in the instructions given to get permissions to the directories it's trying to put the files to. I did try changing file directories where adb pushes them to and doing it that way, but like I said I can't do it even on the SD Card directory where you would normally have read-write permissions.

So what do I do? Run the phone in normal Bootloader mode, or do I need to take it to Recovery mode or Fastboot mode? Which is it?
[LG V20 Guides, News, & Discussion] desireless:
Are you still able to go download mode? There's still chance of flashing it with a working firmware using LGUP if yes.
[LG V20 Guides, News, & Discussion] desireless:
I have solved this issue.

It was in the instructions in the first post but I couldn't understand this in Step 17:

If your phone's userdata got locked, there may be a need to wipe cache and data to regain access.

I have re-written Step 17 so that other novice (like myself) could understand the instructions better.

****

17. Boot in to TWRP.

Press and hold volume DOWN; press and hold power until the LG logo comes up, then briefly release power (0.5-1.0sec) and then hold power again. If you fail to get this right the first time, you will likely need to pull the battery out and start from power off.

You will then be prompted "Delete all user data (including LG and carrier apps) and reset all settings?"

Select "Yes" twice, and as long as TWRP installation was successful you'll get into TWRP and NO RESET will be done.

IF YOU ARE PROMPTED for the password at TWRP, use these steps to remove the prompt:

- Tap “Cancel” button at the Mount\Decrypt Data page

- At the “Unmodified System Partition” screen, Swipe to Allow Modification

- Tap Wipe button, then “Advanced Wipe”

- Select “Data”, the Swipe to Wipe

- After completed, tap “Back” and “<” to the “Wipe Data, Cache, and Dalvik” page

- Tap “Format Data” button, type “Yes” and the tick sign

- Tap Back, < until the main menu

- Tap “REBOOT” button, click “Recovery” button

The password prompt should have disappeared by now. You have to execute these steps to remove the password at TWRP or you will be prompted for a security password after the LG logo. The mystery of this password has never been solved - You will never be able to get pass that password prompt screen.

18. Install Kernel and SU Implementation

Once rebooted to TWRP recovery, install "h990-kernel.zip" and then flash SU implementation (Magisk.zip or SuperSU.zip).

- Tap “Install” button at the main menu

- Tap “Select Storage”, choose Micro SDCard and OK

- Select “h990-kernel***.zip” file and Swipe to confirm flash

- Tap Back, <

- Either one:

i) Select “***Magisk***.zip” file and Swipe to confirm flash

ii) Select “***SuperSU ***.zip” file and Swipe to confirm flash

- Tap Back, < to the main menu and tap REBOOT\SYSTEM
[LG V20 Guides, News, & Discussion] desireless:
Upgrading of Firmware after Getting Root

For those who are struggling to upgrade to the latest firmware after getting the phone rooted, this is a very good set of instructions by xdav20. It is beneficial to novice like myself as the instructions are simple and easy to understand.
[LG V20 Guides, News, & Discussion] Migush:
[IMG="----------------------------------------------------------------------------------------- Kernel Crash! ----------------------------------------------------------------------------------------- LGE Crash Handler : Kernel Crash! If you want to get ram dump, Please do following action. 1) Please connect USB. 2) Get the ram dump image using QPST Configuration. If you want to Reboot, Press Volume Down and Hold a Second ----------------------------------------------------------------------------------------- Reset reason reboot_reason:0x6d630100 tzbsp_reason: 0x6d630200 gcc_reset_status: 0x3 dload_entry_count: 4 pm_pon: 0x200020020 pmi_pon: 0x200020030 ----------------------------------------------------------------------------------------- Board Info board_rev: 1.0 msm_serial: 0xc123ea52 msm_rev: 3.1feature_id: 0x19 midr_el1: 0x511f2112 storage_serial: 0xbe84e8c0 boot_config: 0x1c9 jtag_id 0x409470e1 oem_id: 0x310000 cx_pvs: 4 mx_pvs: 4 pm: 90.02.00 pmi: 13.01.01 secure: enabled --- SEE IMAGE FOR FULL LOG"]https://haverkae.home.xs4all.nl/Files/IMG_20180731_132536.jpg[/IMG]

My phone sometimes randomly crashes because of a Kernel Crash. I'm using Gamma kernel right now with LOS 15.1, but that does not seem to matter. A while ago I was using stock (with root and the fixed kernel for noise), but was forced to go back to full stock (without root) because I wasn't able to boot anymore thanks to there crashes. Right now it doesn't crash that often and I hope it stays that way. Does anybody know what this means (see image). And how would I perform a ram dump (if that would help)?

Edit: H990DS TWN
[LG V20 Guides, News, & Discussion] hellboyborn:
Guys quick question, is it necessary to put abootbackup.img file back to phone to restore to stock? Or LGUP would flash kdz without it? I have 990DS rooted with this method. Please suggest.
[LG V20 Guides, News, & Discussion] zeguym:
i already ask this, unfortunately no one answer it :crying:
[LG V20 Guides, News, & Discussion] hakkai999:
No need to back it up as long as you can still LGUP.
[LG V20 Guides, News, & Discussion] zeguym:
Thank you for your answer. As long as i can use LGUP, no need to flash aboot right.
[LG V20 Guides, News, & Discussion] tech_infinity:
Firmware for v20 990DS Indian variant is H990ds10f_00_OPEN_ESA_DS_OP_1227.kdz. with December 2016 that is needed for this process.
[LG V20 Guides, News, & Discussion] Migush:
I'd say just try and find out yourself. It can't break your device if it does not work. See the "Dirty santa comes for H990" thread
[LG V20 Guides, News, & Discussion] cnjax:
No the warning screen will not go away if you just flash a stock rom, you would have to replace aboot with your backup which in effect relocks the bootloader
[LG V20 Guides, News, & Discussion] ema96bs:
Hi all

I followed the guide step by step, downloaded the AUS .kdz, firmware dated 2016-12-30, did all the steps except for the 16th, in which I had to go with "cd C:\adb" before typing "fastboot ...." because the command windows said it couldn't find the image of the twrp.

Did those steps 5 times, always returning back using again LGUP with the same .kdz, but the results were always the same: after typing "fastboot reboot", the phone booted and the screen was full of grey stripes with lines in green, red and blue (seems like old TVs screens with no signal).

I don't know what to do.

TWRP seems not installed, since when i tap volume down and power and all the steps in the guide, only the white window in which i have to wipe the data appears, nothing more.

The stripes appear when booting, right after the LG logo, both in the main and in the second screen.

Litterally don't know what i missed and what to do now.

I want it to be rooted for the screen burn in/ghosting solution with KCAL and maybe flash a Lineage, so if you can help me I will be thankful
[LG V20 Guides, News, & Discussion] hellboyborn:
Guys this for those who want to return to stock H990DS version. There is no need to put that aboot.img file back, LGUP flashes kdz without any problem without putting that file, just make sure you have right dll for your model otherwise it would stuck at 9% and would give an error. If dll not found just extract it from .kdz file. It would flash without any issue.
[LG V20 Guides, News, & Discussion] cnjax:
It will only be possible if arb isn't incremented
[LG V20 Guides, News, & Discussion] tech_infinity:
Will only know when we actually get it whether or not they implement anti-roll back.
[LG V20 Guides, News, & Discussion] karkand:
[MENTION=5906767]aakashverma0007[/MENTION]

Hello,

So, what I have to do instead of 'fastboot reboot' on the step 16?

Please advise.

Thank you.
[LG V20 Guides, News, & Discussion] uxairmalik:
Just pull out the battery after flashing twrp.

And manully boot into recovery.
[LG V20 Guides, News, & Discussion] aleks702:
hi! from Mandaue also here. Can you help me? it looks like my phone got bricked when i tried to root. LGUP is no help :( it wont detect my phone
[LG V20 Guides, News, & Discussion] tech_infinity:
What do you mean by looks like? What happened and after which step?
[LG V20 Guides, News, & Discussion] hakkai999:
PM me your details. Have you really tried LG UP?
[LG V20 Guides, News, & Discussion] Cyber_in:
need help

sfter step 14 my device went dead with multy colour screen

i tried flashing kdz file with lg flash tool in download mode but no use it stops in 10%

KDZ file invalid.us996->H990

and lgup saying unknown in modle

how to unbrick my cell

also in

---------- Post added at 09:28 PM ---------- Previous post was at 09:19 PM ----------

i found in step3,bat its entered that

twrp-3.0.2-1-u996.img

insted of

twrp-3.0.2-1-h990.img

---------- Post added at 09:30 PM ---------- Previous post was at 09:28 PM ----------

i can enter in to fastboot

is there any way to unbrick through it or

help me to make my cell detect in lgup
[LG V20 Guides, News, & Discussion] cnjax:
Must you quote the entire OP, smh
[LG V20 Guides, News, & Discussion] Cyber_in:
Just need help

I am coming to xda after 7 years

So dont know how to start

---------- Post added at 07:48 PM ---------- Previous post was at 07:47 PM ----------

Hi can u help me in this case
[LG V20 Guides, News, & Discussion] Cyber_in:
Can some one provide about.img

File that backuped
[LG V20 Guides, News, & Discussion] Redline:
You're meant to have done it yourself.
[LG V20 Guides, News, & Discussion] Cyber_in:
I haven't backup so only asking

I can boot it in factboot

If i have the file

Then laugh can recognize my cell
[LG V20 Guides, News, & Discussion] lukem99626:
anyone else have the bug where it self encrypts after installing twrp?
[LG V20 Guides, News, & Discussion] cnjax:
If you are doing the root procedure, make sure that you format data before booting to system
[LG V20 Guides, News, & Discussion] :
still no custom rom for the h990ds?
[LG V20 Guides, News, & Discussion] tech_infinity:
There are 3 roms:-

Lineage OS 15.1: https://xdaforums.com/v20/development/rom-unofficial-lineageos-15-1-lg-v20-t3775689

Resurrection Remix: https://xdaforums.com/v20/development/rom-unofficial-resurrection-remix-v6-1-0-t3825359

Super V20 rom: https://xdaforums.com/v20/development/rom-superv20-h918-t3764390

---------- Post added at 06:20 PM ---------- Previous post was at 06:18 PM ----------

@emdroidle maybe you could replace "reboot " (after flashing recovery 2 times)in the 16th step with remove your battery and start again. A few people(including myself) had problems if we simply rebooted. I searched and found a few other people had similar issue.

PS: I really appreciate you making root available to H990 :)
[LG V20 Guides, News, & Discussion] BananowyPotwor:
Thx [MENTION=6984210]emdroidle[/MENTION] for this root solution, it works good, now i can flash custom roms with my H990DS :)
[LG V20 Guides, News, & Discussion] lukem99626:
In twrp?
[LG V20 Guides, News, & Discussion] mehradasadi:
Hi guys!

Witch one of Linage ROMs I should download for version h990ds?
[LG V20 Guides, News, & Discussion] Redline:
Don't double post, you already asked in the right thread.
[LG V20 Guides, News, & Discussion] Sopepa:
8.0 is now up on my H990N HKG, so I assume that it wont work after updating... Is that right?
[LG V20 Guides, News, & Discussion] andyzred:
same question from me, 8.0 available for H990DS TWN now. Will the update work with KDZ writer or it will require custom root exploit for version 8.0?
[LG V20 Guides, News, & Discussion] Kiwironic:
I got a V20 today, H990DS.

Just wondering assuming I do all this and get root, for a room before 31 Dec 2016 as per instructions. How do I then update the ROM to stock latest (oreo) without losing root??
[LG V20 Guides, News, & Discussion] Redline:
You don't. Best you can do is flash a custom ROM like LineageOS or RessurectionRemix that is already available, is based on Oreo 8.1 and is much, MUCH faster than any stock ROM available.

---------- Post added at 06:56 PM ---------- Previous post was at 06:50 PM ----------

Correct. If you want Oreo/8.x then your best bet is to backup your data, do a clean flash in TWRP and move to an AOSP ROM like LineageOS or RessurectionRemix and then put what you want back on your phone. These ROMs both have functioning second-screen enabled versions and there's second-screen kernels available for those ROMs (I build the second-screen version of Gamma kernel in its thread).

Security was tightened in Oreo, so I highly doubt it works now, especially considering the exploit was patched in all ROMs dated after the version you need to use the exploit in the first place (Dec 2016).

Unless someone out there has rooted stock Oreo and is sitting on the files for it, I wouldn't assume this process works for Oreo at all.

Like I said above, your best bet is a custom ROM that is newer and retains the DirtySanta exploit.
[LG V20 Guides, News, & Discussion] Kiwironic:
Thanks for the prompt response, I have two questions, since I got this phone yesterday as I mentioned.

First, screen ghosting, what's up with that?

Second, tried doing this method but always end up with static screen and modem error. Any way to bypass that?
[LG V20 Guides, News, & Discussion] tech_infinity:
After flashing the recovery twice, don't reboot the device. Take out the battery, wait 5 seconds. Put in the battery and continue with steps.

Screen ghosting could be resolved if you're rooted : https://xdaforums.com/v20/how-to/lg-v20-screen-burn-fixed-t3661631

If not rooted, install Sfilter lite and set it to 10%
[LG V20 Guides, News, & Discussion] cnjax:
Part of this information is wrong several variants have stock Oreo with root
[LG V20 Guides, News, & Discussion] Kiwironic:
Success finally. Thanks
[LG V20 Guides, News, & Discussion] Sopepa:
Cool, thanks! Ive never used any custom ROM before. I will take a look at Lineage OS.
[LG V20 Guides, News, & Discussion] NW13:
Hey. For anyone who's interested in having Android 8.x root for the H990DS/(likely H990N HKG) as I'm sure everyone who is following this thread is, someone looks to have made a thread that might serve as an area to keep current and future potential options consolidated and organized: https://xdaforums.com/v20/how-to/lg-v20-h990-h990ds-oreo-root-options-t3852764
[LG V20 Guides, News, & Discussion] simon27gr:
GUYS PLEASE I NEED HELP! After doing step 16 I'm not able to boot into twrp. So i tried going back to the bootloader and redoing the step but when i type ''fastboot devices'' my device doesnt show up even tho it shows up at devices management and is being recognised by LGUP. Also when I'm on the bootloader the screen shows static insted of the usual screen (but the regular promt can be seen underneath it). I tried searching the thread but noone seems to have the same problem that I do. Any ideas?
[LG V20 Guides, News, & Discussion] karkand:
I got this one at the first try. You should flash your phone with LGUP at first and do the process again. But, do not FASTBOOT REBOOT, JUST PULL OUT THE BATTERY, THEN HOLD VOL DOWN + POWER to get into the TWRP (Recovery)..it should be revised on OP but he is not doing it, just read a few posts on the pages before.
[LG V20 Guides, News, & Discussion] simon27gr:
I did what you said and after selecting yes twice the screen shows static and just reboots. Whats up with that?
[LG V20 Guides, News, & Discussion] karkand:
[MENTION=5689649]simon27gr[/MENTION]

Are you sure that you are flash recovery with the proper step? like waiting for 30s then flash again..after the second flash, you need to wait for another 30s then pull out the battery..I just doing this about 10 times and it is working great..

Mine is H990DS IDN, was using Stock Nougat ROM with Magisk and updated with KDZWRITER, MK2000 BTTF, AdrenoVulkanDriver,etc. working very fine and good.

Then I flash this ROM, Working fine flashing this stuff.

But, after flash AdrenoVulkanDriver & other modules on Magisk (Emoji, Font, YoutubeVanced), my screen after boot from TWRP it just like a blinked screen. Then go to TWRP again, wipe Dalvik & Cache, still the same.

So, I am going to TWRP, then flash RR-O latest ROM + nanoGapps it is working again..then go to TWRP to flash Magisk, working fine again..Then I do the same like before (flash AdrenoVulkanDriver & other modules on Magisk (Emoji, Font, YoutubeVanced)), only stuck on LG Logo. was working fine with TWRP 3.0.2.1.

Then I go to TWRP and flash abootimage to back to Stock Nougat, working good in flashing this image. Power off phone, go to download mode,

Detected in LGUP as H99010P. Then try to flash H990DS10e/k on 4% got failed. I think it is because my phone just changed from H990DS into H990 :( so I can't use LGUP. Then I go to another method through Fastboot, but failed when trying to flash abootimage, it says that my Fastboot is Locked.

Please some out there help me to resolve this issue. I can't boot to anywhere than a triangle, LG logo, a triangle, LG Logo, and so on and Download Mode, and Fastboot Mode.

Thank you very much.

It is working very good now after using LGUP patched from here but, idk if it is working after using Uppercut, or just after moving the LGUP patched to the system folder.
[LG V20 Guides, News, & Discussion] Ngo Nguyen Vu:
Help me.

Help me

up kernel "h990-kernel-v0.2.4.zip" for mode: h990ds it takes two sims. :crying::crying:

tks
[LG V20 Guides, News, & Discussion] Incredible_Max:
I have rooted my phone using this tutorial months ago, now I updated to Oreo via the rooted Oreo ROM from another thread (https://xdaforums.com/v20/development/rom-h990ds-oreo-flashable-t3853735/page15)

Before I did a backup to an external drive (with data/media). My problem is now, that when I restore that backup completly my phone boots up but then tells me that the settings app crashed and it looks like it wants me to do the first time set up again.

Is there any step I miss in the restore progress, and is there any way to extrat my sd card (data/media) files from the TWRP backup (most likely stored in "data_image.emmc")?
[LG V20 Guides, News, & Discussion] cnjax:
This has nothing to do with this thread
[LG V20 Guides, News, & Discussion] Incredible_Max:
Ich thought this version could User a different data format as usual so I asked here
[LG V20 Guides, News, & Discussion] Ice Fire:
Hello

I made a mistake when i unlocked my bootloader, because i did not know that twrp is flashed automatically. What happend is, that i only moved the version of twrp into the adb folder which i intendet to flash manually.

I (thougt i) solved the problem by flashing twrp again over fastboot but as i intendet to go back to stock (no decent camera for RR) i noticed that the download mode is full with static.

I have an H990DS.

What is working is everything besides download mode.