yashsingh1/xdaforums huggingface dataset:
[LG V20 Guides, News, & Discussion] emdroidle:
No methods have been proposed for removing it, at this point, expect it to be there forever. :(

That is most likely due to the firmware present on your phone. The Taiwan firmware (you haven't said which region your phone is) lacks support for VoLTE and VoWiFi. Installing /system and modem from an Australian or Singapore KDZ might well fix this issue.

KDZ Writer was written for updating /system and modem from KDZ files. Restoring of kernel modules is unreliable right now so kernel reinstall may be required after upgrades, but this does get those two key pieces updated while retaining root.

I may have been too harsh in my evaluation, problem is werewolf trips some "death flags" for me. I don't have any reason to believe there is anything malicious in the werewolf kernel. Just there are some setup choices made by [MENTION=5184450]USA-RedDragon[/MENTION] which seem suboptimal.

One problem is one of those decisions is almost trivial for me to go the other way because I've got expert knowledge of that bit of development. If [MENTION=5184450]USA-RedDragon[/MENTION] has minimal knowledge of that area then I can see why the decision was made (difficult/impossible for him to go the other way).

The reports are the H990DS firmwares are pretty well interchangeable from device to device. LGUP will successfully install a Singapore KDZ onto a Taiwanese device and it will function. As such KDZ Writer should be able to install modem and system from an Australian or Singapore KDZ and it should function.

Please note that "should" has appeared twice, in the previous sentence. I lack any reports of success or failure. I plan to try this in the near-ish future, but haven't yet. There is some risk, please have a fallback in case the worst should occur.

I thought I saw a report of someone turning the 10p KDZ into a TWRP flashable .zip, which only modified modem and system. KDZ Writer should also be able to accomplish the task on a H918, but this is not a setup I've tried. Please note the word "should", please have a backup plan prepared for the eventuality of this failing.
[LG V20 Guides, News, & Discussion] dudeawsome:
yes that has been done but if you had root already and twrp installed I did not have root and I upgraded to 10p version which isn't rootable as of yet so I need root method for the device I could unlock bootlaoder but after that there is not method to root the device
[LG V20 Guides, News, & Discussion] zhadj030:
Thanks for confirming . :(

My appologies for not mentionning this ,I am running : v10c-TWN-XX.

So To be able to install the Australian firmware, It might be possible but it is not tested yet ? or else can we go throught the (very) long road of using LGUP to flash a stock australian firmware then go to do the root process again (Patch has to be december 1st) using the same method ?

I am currently in daily need for the V20 as my daily driver so it might be a while before I try some tests, but I am noticing after playing with it a (lot) of annoying issues especially connecting to LTE advanced and a non functionnal Carrier Aggregation. Those issue appear to be related to the phone firmware not the root itself

(Connecting to LTE is fast and instant, it is the carrier aggregation that do not seem to work , We have band 2-4-5-7- (12-17 outside the city) all available in my city but never once I got connected to 4G+ and even secret menu only shows 2 possible combinations .

Something else, trying to select/lock LTE bands will never work and always return Fail message)

This is mainly the reason I want to try the Australian version, and see what happens.
[LG V20 Guides, News, & Discussion] exadeci:
Are you going to continue or werwolf or are you switching to jcauddonuo's kernel?
[LG V20 Guides, News, & Discussion] rexamoloty:
need help my lgv20 h990ds is stuck on lg logo
[LG V20 Guides, News, & Discussion] jobheger:
Flash your abootbak.img back using TWRP, you can find how to do that on this thread.

Afterwards restore the appropriate .kdz file for your device using LGUP.
[LG V20 Guides, News, & Discussion] ahmedyar91:
Hi people I am new to LG,

I want to Unlock the Bootloader,

I have checked security patch level which is April 2017, is it necessary to flash older firmware or can it be done using KDZ writer to flash December security patch alone.?

regards
[LG V20 Guides, News, & Discussion] rexamoloty:
so i flash abootbackup using twrp and the flash kdz using lgup

---------- Post added at 12:50 PM ---------- Previous post was at 12:39 PM ----------

and which partition should i use boot recovery system image modem persist
[LG V20 Guides, News, & Discussion] Leicxan:
Switching to jcauddonuo's kernel source. But I am busy with my work there days.
[LG V20 Guides, News, & Discussion] bvannier:
Problem solved!

Think you ... The only way to get rid off this message is to format the data from TWRP and problem totally solved!

Good evening,

To get my V20 990DS rooted, I have the feeling that I really followed the entire procedure.

Got the red triangle, then boot into TWRP, then I am asked to enter a password !!!

I flash the twrp-3.0.2-1-h990.img.

I also flash the kernel, h990ds-kernel.zip, and SuperSU-v2.82-201705271822.zip with error messages in TWRP

Reboot, red triangle, seems good then error message asking for a password.

I am on 21/30 attent

Please, do help an old man

Sorry for my english...

I have the abootbackup.img stored in a secure folder on my PC

Kindly yours
[LG V20 Guides, News, & Discussion] Jaspreet.master7:
go to twrp and format data

then flash kernel and supersu again and it will boot
[LG V20 Guides, News, & Discussion] jobheger:
How do you mean exactly? The only partition you need to flash is your aboot partition.

This is needed in order for LGUP to correctly recognize your device.

Once you do flash the aboot partition and reboot your device, you will lose TWRP access.

You can proceed to flash your .kdz image with LGUP afterwards.

Please be careful though with flashing partitions, you really don't want to mess that part up.

---------- Post added at 08:31 PM ---------- Previous post was at 07:52 PM ----------

@emdroidle I have a question regarding the boot structure of the V20. As of my understanding the V20 uses UFS instead of eMMC, which means that the partition structure is different. So instead of /dev/block/mmcblk0 it now uses /dev/block/sdxy. And results into multiple disks.

/dev/block/sda
/dev/block/sdb
/dev/block/sdc
/dev/block/sdd
/dev/block/sde
/dev/block/sdf
/dev/block/sdg

I think the most important one is /dev/block/sde in my opinion, because it stores partitions like e.g. aboot, boot, devcfg, recovery. My partition structure got corrupted because of my own mistake. Which results in a "hard brick" meaning the old familiar "Qualcomm HS-USB QDLoader 9008". I'm sure you're familiar with it. I still remember you could boot from a MicroSD card when your device was hard bricked on a V10, by flashing a specific image. That way you would have all the necessary partitions needed in order for the phone to boot into download mode.

Now, the V20 doesn't use eMMC anymore - But my question was - What if you would flash the /dev/block/sde device unto a SD Card.

By creating an image on TWRP.

dd if=/dev/block/sde of=/sdcard/sde.img bs=1024 count=168960

That way you could have the necessary partitions on your sd card. Still, I have no idea if the Snapdragon 820 still supports booting from eMMC.

What do you think? I'm very curious. Thanks! :)
[LG V20 Guides, News, & Discussion] kuachi00:
hi good day everyone just want to ask if there is a fix now for camera focus thanks ^_^
[LG V20 Guides, News, & Discussion] ahmedyar91:
Anyone.?
[LG V20 Guides, News, & Discussion] exadeci:
You are not giving any information about your phone... So yeah go and brick it!
[LG V20 Guides, News, & Discussion] ahmedyar91:
The details are below,

Model :H990DS

Firmware: 10e AME

Security Patch level April 2017

BTW [MENTION=2764901]exadeci[/MENTION] IMHO information about my phone wasn't necessary because my question was more about the capability of KDZ writer
[LG V20 Guides, News, & Discussion] crombull:
Did you read the first post? Step #3?

3. Go to Settings -> General -> About phone -> Software info -> Android security patch level; if your phone is on an update after December 31, use LGUP to "refurbish" to an earlier firmware release (this will do a factory reset).
[LG V20 Guides, News, & Discussion] ahmedyar91:
I read this already, but I think this post was written before the KDZ writer was released,

I am just asking if KDZ writer is capable of downgrading Security patch level or not.?
[LG V20 Guides, News, & Discussion] crombull:
I used KDZ writer to upgrade from 10c to 10f without problems, but I don't know if it's possible to downgrade as you want.
[LG V20 Guides, News, & Discussion] Mars104:
You can downgrade using lgup if you need to. Not sure if downgrading with kdz writer will work.
[LG V20 Guides, News, & Discussion] sacasoh:
Hello guys, as a new user of H990DS (purchased today, never used a LG phone before), even after reading this thread and some others (and possibly because I went the last 4 years without rooting my old phone - my last custom FW was CM11), I have some newbie questions:

1. If I unlock the bootloader/root now, is it possible/probable that this will allow us to use an eventual port of LineageOS 15 on our devices?

2. Besides the camera issues with this kernel, is there any other effects on the phone? I bought it basically for the audio system.

3. Is it possible to use Xposed (or any other solution of the kind) on this device rooted? I rooted my older phone eons ago just to be able to double-click the volume keys to skip audio tracks...

4. Last one lol: Based on your experience, do you guys think that LG will update our phones to Android 8.0?

Thank you!
[LG V20 Guides, News, & Discussion] ahmedyar91:
Welcome to the LG club.

If you go for Unlocking Bootloader

1. The op is working on LOS so there will be a possiblity of getting it in the future.

2.only some devices are facing camera focus issue and besides that there isn't any bug

3. Yes people are using xposed and magisk

4. Definelty yes ?
[LG V20 Guides, News, & Discussion] faeterov:
Was the fixed screen will recording video problem solved?
[LG V20 Guides, News, & Discussion] ahmedyar91:
People are using 0.2 kernel to fix that issue
[LG V20 Guides, News, & Discussion] sacasoh:
Thanks dude. Just another thing: given what you answered, that means I can root and use the KDZ writer tool to have my system updated without losing root, is that right?

Is there any downside to this over stock (besides the downsides of having root per se)? Because if not, then I see no reason not to root it.
[LG V20 Guides, News, & Discussion] Hamodi:
hii guys

i have not been here for along time

does the root now fully working ??
[LG V20 Guides, News, & Discussion] Brutale1090!:
Not even able to read the last three pages?
[LG V20 Guides, News, & Discussion] sacasoh:
Everything went alright here: after a static screen I used the method from [MENTION=924699]Mars104[/MENTION] and problem solved.

If you miss the process you'll get another static screen (in my case I forgot to put kernel and supersu/magisk in the sdcard - previously I had "pushed" them via adb to internal storage to save the seconds needed to remove and reinsert the sdcard...). In this case just do [MENTION=924699]Mars104[/MENTION] method again.

Also, I installed the alternative kernel from [MENTION=4394458]Leicxan[/MENTION], and had to use [MENTION=273964]ahlok_hk[/MENTION] instructions to be able to boot - else the phone was just rebooting into recovery mode.

Now gonna try to update the system to SEA 10g update, using the kdz writer tool.

Edit: Updated using KDZ Writer tool. Got a "Failure while unmounting "/system": Device or resource busy. kdzwriter: Failed while restoring kernel modules, recommend kernel reinstall!" and then reinstalled the same kernel as before and rebooted. V10g-SEA-XX successful installed.
[LG V20 Guides, News, & Discussion] alliesquids:
Really hoping there will be a new kernel that will fix the camera focus issue, other than that the root is amazing c: Tried to update to 10g with kdzwriter and it didn't fix the camera.
[LG V20 Guides, News, & Discussion] sacasoh:
Are you using "stock" kernel, or the alternative one? Maybe try the other to check if it works for you (take care changing them, I think it isn't straightforward, but everything is in the OP).
[LG V20 Guides, News, & Discussion] alliesquids:
Ive tried all three, all of them have the same problem.. I have the SEA varient.
[LG V20 Guides, News, & Discussion] exadeci:
I have the Australian version rooted, updated and with Leicxan kernel and I've tested right now and the stock app has a square that goes green and there is a bip telling me it's focused.

I don't know if testing the Australian version is an option or maybe it's an issue with your phone.
[LG V20 Guides, News, & Discussion] alliesquids:
Could be an issue with the SEA version.. Oh well lol

Will keep expectations low for a camera fix to be released but would be really awesome if it does ever get patched.
[LG V20 Guides, News, & Discussion] Brutale1090!:
Anybody having the camera focus problem and no SEA version?
[LG V20 Guides, News, & Discussion] Mars104:
Yes twn version here and focus issue. Folk have tried flashing other region firmware with no luck. It doesn't seem related to the region. I have tried every kernel, lots of fw versions at the moment it seems if you encounter the focus issue your choice is root with no focus, or unroot and focus working. I went for the former. I'm optimistic a new kernel will fix this issue in time.
[LG V20 Guides, News, & Discussion] :
I'm currently still experiencing video recording issues with the latest H990 v0.2 kernel on my H990DS TWN on V10f.

After 5-30 minutes any recorded videos freeze on the first frame while the audio plays in the background.

I haven't had any camera focus issues luckily, unlike others.

Is anyone else still having video recording issues on the latest kernel?
[LG V20 Guides, News, & Discussion] Mr.Gong:
This ( werewolf_h990_unofficial_v0.1_l711) kernel should work out，But the focus problem is not solved.
[LG V20 Guides, News, & Discussion] :
Thanks, I'll try that kernel out.

Although I would personally prefer to use [MENTION=6984210]emdroidle[/MENTION]'s kernels in the long term due to his kernels being close to stock, so a fix would be great :D.
[LG V20 Guides, News, & Discussion] sacasoh:
SEA 10g here, using werewolf_h990_unofficial_v0.1_l711: I've got a crash - a green screen with "app watchdog bite" - and lots of error codes (including "reset reason: 0x6d630300"), then it crashes seconds after the system is on. Anyone knows something about this? I'll try to change kernel and see if this solves this issue.

Edit: DirtySanta 0.2 kernel get "Kernel Crash" black screen... only think I installed on the phone besides "normal" apps was Titanium Backup, and I removed evernote...

Edit2: Even with data wipe I'm getting Kernel Crash". Will try to flash TWRP again.

Edit3: Partial unrooted with KDZ writer tool, changed SU implementation from Magisk to SuperSU. Reflashed werewolf Kernel: got the same green screen... Reflashed TWRP, crashed again when setting up the phone... Reflashed KDZ, same thing...

Edit4: going back to stock for now (as I need the device). Dunno what's caused the above, but the first green screen occurred 4h30am, the phone was just in standby. Modifications after rooting and updating to 10g: locale changing app (to get PTBR on the phone); Titanium Backup (removed evernotes)...
[LG V20 Guides, News, & Discussion] thubble:
I have an SEA model, updated to 10g using the kdz tool. Leicxan's werewolf kernel has completely solved the video recording issues I was having (freezing on first frame); I've gone 75 hours without a reboot, including ~48 hours on battery (I have an extended battery) and video recording is still working fine. Unlike many others, I never had the camera focus issues (and still don't). Using Magisk 13.3, Magisk Hide enabled and no modules.
[LG V20 Guides, News, & Discussion] sniper9911:
i have the GCC H990DS model , Successfully rooted (systemsless super su) my phone using dirty santa stock h990ds kernel , how can i update my phone now to the latest version ? i am currently on the november patch build H990ds10b_00_OPEN_AME_DS_OP_1103

my latest available build is H990ds10e_00_OPEN_AME_DS_OP_0417

please advise me
[LG V20 Guides, News, & Discussion] ahlok_hk:
Just wonder if the camera focus issue is related to different camera hardware. For those who has camera focus problem, could you help to go to the

V20 HiddenMenu by dailing *#546368#*990# and click "SVC Menu" > "Version Info" and report the following information below?

1. HW Version

2. Factory Version

You may also test the camera at the HiddenMenu by choosing "Device Test" > "SAAT" > "Sevice Menu - Manual Test" > "Camera(Main) Test and check if the camera can adjust focus automatically.

P.S. I have no focus issue and I see the following from by V20 :

1. HW Version = 1

2. Factory Version = LGH990dsAT-00-V10a-TWN-XX-SEP-19-2016
[LG V20 Guides, News, & Discussion] alliesquids:
Mine(with camera problem):

HW Version- Rev.1.0

Factory Version- LGH990dsAT-00-V10g-SEA-XX-JUL-20-2017

maybe it is just a problem with newer 990dsV20 devices?
[LG V20 Guides, News, & Discussion] kersian:
Mine with camera issue is also the same version.

Should the factory version be 10g? Think it was shipped with 10e version on mine.

Doing camera testing in device menu causes fc.
[LG V20 Guides, News, & Discussion] alliesquids:
Idk that's just what the thing says. Probably came with 10e too, I have rooted and went back to stock with lgup a bit to try and get the camera focus to work. Maybe that's why it says 10g.
[LG V20 Guides, News, & Discussion] Mr.Gong:
I personally understand that the focus issues is related to the hardware batches, may be a new batch of v20 （990n 990ds） after the root has a focus problem, because I'm KDZ to 10b or 10d even without root camera can't focus, KDZ to 10e or 10h doesn't root can focus the camera, it can be seen that the new batch hardware should not support the old system, at least 10e start camera function is normal.
[LG V20 Guides, News, & Discussion] Mars104:
Mine (with focus problem) is

1. HW Version = 1.0

2. Factory Version = LGH990dsAT-00-V10f-TWN-XX-JUN-22-2017
[LG V20 Guides, News, & Discussion] sniper9911:
answering myself :

solved by kdzwriter through twrp and adb shell

this device takes alot of time to get used to the hard way of rooting and upgrading Firmware

special thanks to the dirtysanta developer ... you are the reason why i got this phone ... without root i wont even consider it

[MENTION=273964]ahlok_hk[/MENTION] MY DEVICE information :

HW Version : rev.1.0

factoryversion : lgh990dsat-00-v10b-ame-xx-apr-17-2017

what is the camera focus issue you are talking about ? mine still focus well after rooting ... my base (oldest) firmware was November build
[LG V20 Guides, News, & Discussion] shivaagarwal1:
Successfully rooted my phone. No problems whatsoever. Focus is working perfectly fine. Upgraded via kdzwriter as well..
[LG V20 Guides, News, & Discussion] Hamodi:
No
[LG V20 Guides, News, & Discussion] ahmedyar91:
Can you provide the hardware version.?
[LG V20 Guides, News, & Discussion] shivaagarwal1:
HW Ver 1.0
[LG V20 Guides, News, & Discussion] Brutale1090!:
Sorry for you
[LG V20 Guides, News, & Discussion] alliesquids:
What is your factory version?
[LG V20 Guides, News, & Discussion] jobheger:
I have a corrupted partition table, could somebody here please make an image of their /dev/block/sde disk with

TWRP using the following command:

dd if=/dev/block/sde of=/sdcard/sde.img bs=1024 count=168960

And sent sde.img on your sdcard to me through a PM or reply? I would be very grateful.
[LG V20 Guides, News, & Discussion] ahmedyar91:
3.Go to Settings -> General -> About phone -> Software info -> Android security patch level; if your phone is on an update after December 31, use LGUP to "refurbish" to an earlier firmware release (this will do a factory reset).

So I've been trying this option but it gives me this error "doesn't support refurbish process"
[LG V20 Guides, News, & Discussion] whc.faith:
Just select 'upgrade' instead of refurbish
[LG V20 Guides, News, & Discussion] ahmedyar91:
So downgrading Firmware can be Flashed using upgrade.?
[LG V20 Guides, News, & Discussion] whc.faith:
Correct. After that you can do factory reset just to make sure that your rom is a fresh one.
[LG V20 Guides, News, & Discussion] whc.faith:
Just upgraded to 10g-SEA, and I got a video problem just like the others. But after flashed werewolf kernel, everything are perfect. Video & camera problems were gone.
[LG V20 Guides, News, & Discussion] ahmedyar91:
Ok Guys I successful Rooted the Device But Camera Focus issue is present

Hw Version: Rev 1.0 ?

I need to go back to stock

i am following OP's guide

After getting into TWRP I connected my device and opened command prompt in ADB folder

after typing adb shell

i copied dd if=abootbackup.img of=/dev/block/bootdevice/by-name/aboot it gave me an error cannot find abootbackup.img,

any help would be appreciated
[LG V20 Guides, News, & Discussion] Mars104:
Did you copy the file to the phone successfully first?

Copy the file "abootbackup.img" from your archive to your phone (adb push abootbackup.img /).
[LG V20 Guides, News, & Discussion] ahmedyar91:
Got it Done Thanks.!!

Yes Mine Also having Camera Focus Issue

HW Version is "Rev 1.0"
[LG V20 Guides, News, & Discussion] sujith1994:
waiting for some miracle worker to make a ROM for this version of v20, and save me from the carcinogenic software that the folks over lg have created. Also would gladly donate to the cause, should a person choose to create one.
[LG V20 Guides, News, & Discussion] shivaagarwal1:
+1
[LG V20 Guides, News, & Discussion] farwish:
+5
[LG V20 Guides, News, & Discussion] alliesquids:
I am sort of regretting getting this model because of the camera focus issue with root, the dual sims is great for travel though and this model had all the frequency bands I wanted for countries I plan on traveling to :/
[LG V20 Guides, News, & Discussion] ps3hacker3:
So is root access for this phone basically a dead project? Sadly mine came with the latest h910 firmware
[LG V20 Guides, News, & Discussion] sniper9911:
you can root even on the latest rom

just downgrade first and then follow all the info in this thread
[LG V20 Guides, News, & Discussion] ps3hacker3:
From everything that I have read so far I cannot get root access on this model yet (the h910 no the 990)
[LG V20 Guides, News, & Discussion] JJJRW:
Yes please a rom. This brings it to my problem. Anybody know any way by which i dont have to unroot and then reroot to repair any system files i may have damaged? I mean if there was a rom i wouldve simply flashed that rom and it wouldve been fine but since there is no rom and this is my first time using a lg phone the only thing coming to my mind is unroot and root. I had successfully rooted thanks to embroidle but then made the mistake of uninstalling inbuilt google apps like movies and music which wouldve been fine on any other phone but on this lg v20 gave fatal error and wouldnt let me add or remove or download apps and google account. I had to unroot and then flash kdz and then reroot. And now i tflashed modded google play store and ended up corrupting the memory as no apk i download installs and i am unable to install apps from play store. So is there ANY way i can restore other than unroot flash kdz and then reroot? I tried the system format from twrp and also factory reset from twrp but no help......please help its tiring and a pain in the bum.

---------- Post added at 05:56 AM ---------- Previous post was at 05:47 AM ----------

And no problem with camera the focus works just fine. Everything is running smoothly except for the single problem i pointed out which is anytime anything goes wrong the option left will be unroot then flash stock kdz and then reroot.
[LG V20 Guides, News, & Discussion] :
I too have camera focus problem after rooted it on H990ds TWN version