yashsingh1/xdaforums huggingface dataset:
[LG V20 Guides, News, & Discussion] Moldiver2:
Greetings people, I have an LG V20 H990DS and I'm going to try to downgrade it to Nougat 7.0 basically because Oreo does not give me anything; I'm going to try to take the root and I have several questions to see if you can clarify it.

Apparently the only method of rooteo is the DirtySanta that is explained in this thread of XDA, it seems that one of the requirements to start using this method is that the security patch is before December 31, 2016, so that first thing I have to do is flash a previous .kdz and that's where my first questions arise:

1) Is this H990ds10b_00_OPEN_TW_DS_OP_1125.kdz firmware version worth it?

2) At the time of flashing so you see you can have two types of problems, that the LGUP does not recognize the device and that the “x”% of the flash of the .kdz stops and does not follow you

After a lot of googling, I found this patched lgup thread that apparently gives good results. Has anyone tried it? Will it go well?

Another thing that worries me is that, once the root is done, when you flash the kernel the video fails, and my question is Is there another kernel so that the video recording does not fail ?, and if I flash the Super Rom of This thread, does it come with a kernel that will not fail me?

And the last question; in the event that I decided to downgrade via LGUP to Nougat, simply without root, what firmware would you recommend that I would flash from lgfirmwares.com? (that has Spanish language and the last Nougat patch)

The truth is that I read a lot but I still do not have many clear things and I would appreciate any help.

(sorry for if I do not write very well but I do not speak English very well)
[LG V20 Guides, News, & Discussion] locoslaw:
I have the same problem.

I downgraded my H990N to H990N10d_00_OPEN_HK_DS_OP_1117 (also H990N10b_00_OPEN_HK_DS_OP_1017) and completed tutorial.

But in step 16 I have the sam problem as genlancelot - device is locked.

Anyone can help?
[LG V20 Guides, News, & Discussion] genlancelot:
I did not solved it yet :/
[LG V20 Guides, News, & Discussion] :
is there a way to boot into twrp without having to go though the lg "delete and reset" process?
[LG V20 Guides, News, & Discussion] Evtoda Gi:
I have an H990N Dual (Hong kong editon) and after bricking and debricking with uppercut again several times. I have the same Encrypt issue like you guys with H990DS!

I have also tried SD card to format via twrp, but then after restarting root checker says I do not have root access!

I tried different variants with wiping and not wiping, but it is encripted or unrooted, also with the oreo ROM wich I updated from zip file like in the Oreo thread said

Why LG makes us that much pain? I was last year despered with the LG V10 and now it is repeating, this is really annoing!
[LG V20 Guides, News, & Discussion] >`xW0:
I need to downgrade from my version to H990ds10c_00_OPEN_SG_DS_OP_1214.kdz to be able to root.

I choose "UPGRADE" from LGUP for downgrade?

Should I enable "Developer options", "USB debugging" and "Enable OEM Unclock" before using LGUP prior to root?

Should I "Enable OEM Unclock" at any of the steps 1-17 mentioned?
[LG V20 Guides, News, & Discussion] :
while my phone was rooted since long i recently upgraded the rom from H990ds10g to H990ds10h. After the upgrade i noticed that FM radio was no more working, it displays "Please wait" and nothing happens even after tens of minutes. I then did an "upgrade" with LGUP with the H990ds10h stock rom and FM radio was back working nicely. Of course now root has gone but while i was expecting it would reflash the device and reset everything actually it didn't change anything to the settings. The system was like unchanged after the LGUP "upgrade" process.
[LG V20 Guides, News, & Discussion] iuriitdr2:
Hi. i have a problem with my lg v20 h990 single sim. I tried to root using dirtysanta metod and finished with blue screen and when finnaly boot, i have no service. Tried to flash stock h990 firmware and nothing happened with the signal, now phone, wi-fi, gps, nfc, bluetooth are working. I've entered in *#*#4636#*#* menu and can't edit anything and says radio disabled.

Please help, because i don't know what to do.

Edit. I finnaly rooted the phone, installed lineage os but still no service. Could someone help me with a modem.iso file?

L.E. Small steps for getting done. Now my phone finds network but can't register sim card. The only way to make a phone call is with lineage os rom 16, any other rom, won't work.
[LG V20 Guides, News, & Discussion] henrylar:
After some years without rooting the V20 990DS, I now think it is time. I have read carefully, and know that I have to downgrade to 10c. However, the only one I can find in the LG-firmware KDZ library that is older than 10d is 10b, this one H990ds10b_00_OPEN_AME_DS_OP_1103.kdz. I believe that it is OK to use that, right? Or can anyone give me a link to the 10c?

When I have been going through the process, can I then right away via TWRP install the new Oreo 20b

https://xdaforums.com/v20/development/stock-rom-lg-v20-20b-h990ds-security-t3935443 without modem and cust partitions? Or do I need to do something else taking the difference to Oreo into consideration?
[LG V20 Guides, News, & Discussion] sharon1122:
having some problems with the h990 variant

i downgraded to android 7 and did everything according to this guide

i get to fastboot mode and flash twrp 2 times with 30 sec wait between each command ( also tried to take battery out & use different twrp versions )

but everytime after i flash recovery im getting alot of static noise on the screen but the bigger problem is i cant acsses recovery at all!

even tried adb reboot recovery command and it didnt do nothing i either end up with a static noise on my screen or a kernel crash which occurs almost every 10 minutes

i also tried using lgup to return phone to stock again but i got the same problem..

does anyone know how i can get in to recovery mode?

btw when i hit volume down and plug usb cable itll go to fastboot mode.. i dont know if i can do somthing from there..

update : i managed to enter twrp about 1 time after i flash it.. the only problem now is i need sd card so the rom & kernel wouldnt delete when i enter twrp

update 2: so twrp works now but after i wipe data & installing kernel i get secure start up screen where i need to put a password (i managed to get rid of it before but then it gave me an encryption unsuccessful error so i tried again from the beggining)

so now im on the secure boot up screen i dont have the password and wipe data & factory reset wont help

OK UPDATE 3 : i finally managed to install lineageos 16 trough sideload adb

& everything looks good so far the only problem i have now is wifi not turning on and i downloaded gcam for v20 but it wont start and crash camera if anyone know a solution it would be awsome

emdroidle thank you for this mod man cant belive i finally rooted my v20!

final update: everything seems to be working thanks to help of the forum members here and at the lineageos post im really happy with the results feels like a new device with root & costum rom
[LG V20 Guides, News, & Discussion] ryo2456:
It change my H990n to US996, why?
[LG V20 Guides, News, & Discussion] chrishanelloyd:
Hi All,

I was able to successfully root my H990N phone using the dirty santa method. Thanks.

I used the firmware H990N10b_00_OPEN_HK_DS_OP_1017.kdz to root my H990N. After rooting, i tried to upgrade the system to "H990N20h_00_OPEN_HK_DS_OP_0225.kdz". I used the command "kdzwriter -a <somekdz>.kdz" to upgrade my firmware to Oreo. But after updating i get stuck in the LG logo. So i tried it for the second time by using "kdzwriter -s <somekdz>.kdz" command and then installed the kernel "H990DS_v2.1-mk2000.zip" on top. But still it gets stuck at the LG logo. Can someone please tell me how can i upgrade it to "H990N20h_00_OPEN_HK_DS_OP_0225.kdz" after rooting. I'm currently on twrp-3.0.2-1.

Thanks
[LG V20 Guides, News, & Discussion] Redline:
You answered your own question in the KDZWriter thread. No need to double post.
[LG V20 Guides, News, & Discussion] chrishanelloyd:
Hi,

My phone is H990N. I downgraded it to H990N10b_1017. After rooting, the second sim stopped working. I mean it's showing a circle on top of it like its searching for a network, but that's it. Then I re-flashed the OS through LGUP and it's working fine when unrooted. Can someone please help.
[LG V20 Guides, News, & Discussion] nietzsche_01:
Hey guys!

I've got a serious problem. I missed that beware:

"Beware: Once past14 LGUP will recognize your device as a US996. Do not flash a US996 KDZ file! Doing so will brick you. See below for instructions on going back to stock."

Now i'm bricked :( abootbackup.img also useless in my case... Is there another way to flash backup file? LGUP and Flash Tools thinks that my phone is US996 but it is H990TR. Has my V20 gone forever or..? Maybe it is in purgatory :) Is there any Dante there who take it back from purgatory to heaven?
[LG V20 Guides, News, & Discussion] hocheukhei12:
hello,i am using v20(h990n) hong kong version . i am now on v20h(android 8.0) stock rom. i want to get the bootloader unlocked, so i downgrade to v20b(7.0) stock rom. and i use adb command to try to unlock bootloader. but when i enter[run-as con], it shows [unknown command], then what can i do?thanks a lot.
[LG V20 Guides, News, & Discussion] cnjax:
No need to quote the entire OP, it's rude
[LG V20 Guides, News, & Discussion] kovacszj:
Hi sharon1122,

How could you bypass static noise and entre TWRP? I did everything as is in op1, buy always get static noise abd no chance to get into TWRP.
[LG V20 Guides, News, & Discussion] sharon1122:
you need to enter TWRP by turning off your phone and than hold volume down + lock button, when you see the LG logo let go of the lock key for 3 seconds and than hold it back

it should ask if you sure you want to reset the phone just hit yes for both questions it asks you. now just wait a lil & let twrp boot (no longer than 3 minutes max even less but just incase)

the static goes away after flashing a rom if im not mistaken
[LG V20 Guides, News, & Discussion] kovacszj:
Thank you very much for the help, fortunately I figured out, that no need to fastboot reboot after recovery flash, si I was able to enter TWRP and flash 8.0 stock rom with mk kernel.

Once again, thanks a lot!!!
[LG V20 Guides, News, & Discussion] mahdimllt:
please help me

hi guys I need some help here. I have h990ds

at step 16 my phone goes into the fast boot but when i try the commands on command prompt It wont recognize my device and it shows me "waiting for device" did I made a mistake during the process?
[LG V20 Guides, News, & Discussion] MR.EXCEPTIONAL:
I am on AME V20a (Official Oreo) with android security patch level November 1, 2018.

What method is for me to unlock bootloader and installing twrp and then root ?

Can anyone Please help?
[LG V20 Guides, News, & Discussion] xantora:
massage me...telegram [MENTION=8935515]drisaac[/MENTION]75.....you have to downgrade to android 7
[LG V20 Guides, News, & Discussion] el-sahef:
I have the same problem with a H990N (Hongkong version). Tried it with all three possible versions:

H990N10b_00_OPEN_HK_DS_OP_1017.kdz

H990N10d_00_OPEN_HK_DS_OP_1117.kdz

H990N10e_00_OPEN_HK_DS_OP_1208.kdz

The rooting process works but after that I get no network with the second SIM card. After reflashing stock kdz (and loosing unlocked bootloader and root) the second SIM card works again.

In this thread someone suggested reflashing the cust partition with the patched LGUP version, but unfortunately this does not restore the second SIM functionality. Also tried it with the modem partition and used different TWRP and kernel versions, no luck either.

I also have a H990DS (ARE region) and on this phone everything works fine after rooting including the second SIM card.

Does anyone have a rooted H990N with the second SIM card working?

Edit:

It looks like the engineering bootloader prevents the second SIM card from working on the H990N: https://xdaforums.com/showpost.php?p=80707761&postcount=32

So if you want have root and second SIM functionality better get a H990ds and stay away from the H990N.
[LG V20 Guides, News, & Discussion] aloysius987:
I am using H990DS and I was trying to repeat the steps I used a month ago.

Last month it worked.

Now it just says package con is unknown.

I am still trying to use 10H firmware for Singapore and I have no idea what I am doing wrong.
[LG V20 Guides, News, & Discussion] Ryder1258:
I'm getting the error while performing the 16th step . Error is " error: cannot open twrp.img"
[LG V20 Guides, News, & Discussion] jago25_98:
I have the problem of the DirtySanta bootloader blocking everything I try by making my H990N look like a US996:

[IMG="h990n wrong ID"]https://i.imgur.com/5few00Hh.png[/IMG]

Same with LGUP: https://i.imgur.com/3pFOrEQ.jpg

...and fastboot is the RED text useless locked recovery:

[IMG="fastboot red text"]https://i.imgur.com/saq8fXcs.jpg[/IMG]

How do I get the phone recognised? BTW Uppercut doesn't help. I don't think it has H990N support anyway. I've also tried loads of DLL files too.

Here's the Back to Life thread. Nothing much on the H990N :(

https://xdaforums.com/showthread.php?p=80985135#post80985135

It seems all discussion is happening here. That's probably for the best. Keep people on teh same thread and just try to deal with the varient hassle.
[LG V20 Guides, News, & Discussion] weyromon:
I have a H990T form mexico and this works just fine, but i cant seem to find a kernel that works, some just have cellular, others just wifi, and others just have my screen like an old crt tv with no signal, what would happend if i didnt flash the kernel provided in this tutorial and just straight use the one that comes by default.

BTW, thank you for providing this guide
[LG V20 Guides, News, & Discussion] Downdone:
When trying to download super SU for flash zip i get error on the website

This XML file does not appear to have any style information associated with it. The document tree is shown below.

<Error>

<Code>AllAccessDisabled</Code>

<Message>All access to this object has been disabled</Message>

<RequestId>9045069112B5C276</RequestId>

<HostId>

Z9MH4JnNOEC0a5fQjaP1NbAKXwnvSOYejiKqBXyS5RN0ar30sNBL/DgBRd+RU4QyYINT7ABetoE=

</HostId>

</Error>

Im not sure if this thread even get support anymore but cam amyone confirm it to be working on h990 single sim? Also what issues comes with root? Thank you, hopefully i can get a reply :)
[LG V20 Guides, News, & Discussion] Downdone:
Where isnthe support guys and techs, we noobs need help and guidance, please we dont wanna bootloop / brick a phone.
[LG V20 Guides, News, & Discussion] eln7aly:
h990n

When rooting for h990n and when finishing work after finishing, twrp and upon take off the screen give colored cross lines and I don’t see anything.
[LG V20 Guides, News, & Discussion] pranciskus2:
deleted
[LG V20 Guides, News, & Discussion] Lgv20ME1:
[MENTION=6984210]emdroidle[/MENTION] or anyone else PLEASE HELP ME!!!!!!!!!!!!!!! i started the process and all was going VERY well but i got stuck on flash recovery TWRP let me explain

after step 2 finishes it closes all the cmd's and in steps it says "At a command prompt run the following commands"

fastboot flash recovery twrp-3.0.2-1-h990.img

fastboot flash recovery twrp-3.0.2-1-h990.img

fastboot reboot

so i open a new cmd and type it, then it says "waiting for device" and it stays stuck on that for ever, i tried opening another cmd and running it again but with no avail.

i tried cd c:\adb\ and then running the command with it just staying stuck on waiting for device.

i then checked for driver of adb using chrome inspect and also checking manage my pc and driver is there

my lg is lg v20 h990 i lgup upgraded to H99010b_00_OPEN_ZA_OP_1103 to be able to root.

now my phone shows static, i am able yo use lgup to go back and retry all steps and i did but got stuck at the same "waiting for device'

PLEASE HELP ME SO I TO CAN HAVE A ROOTED LG V20

please i am literally begging here m8's
[LG V20 Guides, News, & Discussion] pranciskus2:
Same here, tried to quickly root my H990DS, but it will take longer to figure out things. So, still haven't time to root it:D
[LG V20 Guides, News, & Discussion] Lgv20ME1:
Please if u do find a fix for this stuck at waiting for device error let me know PLEASE

as it is now i am network locked to 1 isp and have no network in my town, so i need root to unlock my network and change simcards..... if anyone has a fix please post here urgantly

THANK U ALL
[LG V20 Guides, News, & Discussion] Lgv20ME1:
[MENTION=4442887]jl10101[/MENTION] can you by chance make sense of my problem? Any help will be MUCH appreciated
[LG V20 Guides, News, & Discussion] pranciskus2:
Still nothing works after 2 hrs of attempts... I found some thread which is called "v20 fastboot access Windows 10" but I couldn't find my device in Device Manager.
[LG V20 Guides, News, & Discussion] Lgv20ME1:
[MENTION=7173413]pranciskus2[/MENTION] what is your exact problem you are facing??
[LG V20 Guides, News, & Discussion] pranciskus2:
What firmare did you use? When trying to flash TWRP, I'm getting

sending 'recovery' (26416 KB)...

OKAY [ 0.879s]

writing 'recovery'...

FAILED (remote: device is locked. Cannot flash images)

finished. total time: 0.904s

when using H990ds10c_00_OPEN_SG_DS_OP_1214.kdz

---------- Post added at 05:31 PM ---------- Previous post was at 05:29 PM ----------

I solved this problem, now I'm getting other. Just unplug your device, install LG Mobile driver 4.4.2, plug your device and wait for driver to be finished installing and it will work. If you have it installed, just install it over and do steps again. Reply if it doesn't work and if you get successed on flashing TWRP.
[LG V20 Guides, News, & Discussion] Lgv20ME1:
Do you know where i can get this driver???
[LG V20 Guides, News, & Discussion] pranciskus2:
Google for this: LGMobileDriver_WHQL_Ver_4.4.2.exe
[LG V20 Guides, News, & Discussion] Lgv20ME1:
So my pc says that its detected that i alredy have tye driver...shuld i uninstall it and reinstall it?? If so how?

Windows 10
[LG V20 Guides, News, & Discussion] pranciskus2:
What is version of your driver that you have installed?
[LG V20 Guides, News, & Discussion] Lgv20ME1:
[MENTION=7173413]pranciskus2[/MENTION] for some rsn when i opened it again it installed without a promt of drivers already being there. Shuld i reboot pc before trying to root again?
[LG V20 Guides, News, & Discussion] pranciskus2:
No, did you plug your phone and is it installing its driver?
[LG V20 Guides, News, & Discussion] Lgv20ME1:
i installed the driver i downloaded and then plugged in my phone, nothing happened so i installed it again with my phone left plugged in, both times the installation was successful but never did my phone install an driver automatically... yet after installation with phone plugged in.... it vibrated and i heard the chink on my audio of pc that software done installing
[LG V20 Guides, News, & Discussion] pranciskus2:
Idk then, I also tried to do steps from thread " Lg v20 Fastboost access Windows 10". Naybe they took effect ain't sure. Also tried to uninstall things ftom device manager.
[LG V20 Guides, News, & Discussion] Lgv20ME1:
where u able to complete the root stepps?
[LG V20 Guides, News, & Discussion] pranciskus2:
Nop. Check later post
[LG V20 Guides, News, & Discussion] Lgv20ME1:
check the first page by op another thread is mentioned with alternative directions, maybe see if it differs and could help u
[LG V20 Guides, News, & Discussion] pranciskus2:
Thanks but it's the same. Actually I didn't find a solution accross all thread even a lot of other are having this issue. I'll try different KDZ. Nobody told what KDZ did they use when successed
[LG V20 Guides, News, & Discussion] Lgv20ME1:
[MENTION=7173413]pranciskus2[/MENTION] DUDE!!!!!!!!! your SOOOOO awesome, i went over to that thread of fastboot win 10 and followed the page, firstly i checked with my current drivers if i can set command fastboot reboot it did nothing so i uninstalled it and did what they said now fastboot responds to my cmd COMMANDS!!!!!!!!!!!!!!!!!!! THANK U im 100% sure i can continue with root now,,, i will try wish me luck please i shall report back

--------------------ok help needed, im now typing fastboot flash recovery twrp-3.0.2-1-h990.img then it says error cannot load 'twrp-3.0.2-1-h990.img what can be wrong????

on fastboot on the phone it says "getvar:partition-type:recovery

-------------------------------------------
[LG V20 Guides, News, & Discussion] pranciskus2:
Please paste it here
[LG V20 Guides, News, & Discussion] Lgv20ME1:
what do u mean?

---------- Post added at 07:26 PM ---------- Previous post was at 07:24 PM ----------

....

[MENTION=7173413]pranciskus2[/MENTION] ok help needed, im now typing fastboot flash recovery twrp-3.0.2-1-h990.img then it says error cannot load 'twrp-3.0.2-1-h990.img what can be wrong????
[LG V20 Guides, News, & Discussion] pranciskus2:
I wanted to see code in CMD but you were editing your post. If you can't find solution for your problem, maybe try different KDZ. Sad if still no success.
[LG V20 Guides, News, & Discussion] Lgv20ME1:
--------------------ok help needed, im now typing = " fastboot flash recovery twrp-3.0.2-1-h990.img"

then it says error cannot load 'twrp-3.0.2-1-h990.img

on fastboot on the phone it says

"getvar:partition-type:recovery
[LG V20 Guides, News, & Discussion] pranciskus2:
As we have different errors, I think the problem should be in KDZ.
[LG V20 Guides, News, & Discussion] Lgv20ME1:
but this is the only kdz avalable for my country thats prior to dec 31 2016
[LG V20 Guides, News, & Discussion] pranciskus2:
Can u paste your KDZ here? So I'll not download it
[LG V20 Guides, News, & Discussion] Lgv20ME1:
H99010b_00_OPEN_ZA_OP_1103.kdz

but mine is an south african kdz ...where r u from?
[LG V20 Guides, News, & Discussion] pranciskus2:
I'm from Lithuania and this phone isn't available in my country.
[LG V20 Guides, News, & Discussion] Lgv20ME1:
i will try root again and see what happen

---------- Post added at 07:56 PM ---------- Previous post was at 07:47 PM ----------

----

=====

I FOUND ISSUE i had to cd ''change directory in my cmd to adb folder and then tipe fastboot flash recovery twrp-3.0.2-1-h990.img.

im still waiting for 30 sec will report back
[LG V20 Guides, News, & Discussion] pranciskus2:
I'm surprised how did you get something on your phone screen if you didn't set file location.
[LG V20 Guides, News, & Discussion] Lgv20ME1:
all i did was follow up to where it said to launch step 2.bat then phone rebooted to fastboot, then i tiped in a new cmd on my pc "cd c:\adb\ then i ran the flash recovery command and it worked, i flashed twrp and then instead of typing fastboot reboot i just removed battery and then after 5 seconds put it back in hold volume down with power then when lg logo pop up i leave power button for a split second and pres it again, then it says it will wipe phone i click yes then it says same thing again i click yes again,,, then wait abt 15 secs BOOM i booted to twrp
[LG V20 Guides, News, & Discussion] pranciskus2:
Cool, I'll try your KDZ. I really hope that it'll work on my device.
[LG V20 Guides, News, & Discussion] Lgv20ME1:
will u try now? if so i will wait here by my pc for your report on how it went...
[LG V20 Guides, News, & Discussion] pranciskus2:
No, I'm preparing for exam. Thanks for report!
[LG V20 Guides, News, & Discussion] Lgv20ME1:
goodluck, i will check in regularly!
[LG V20 Guides, News, & Discussion] pranciskus2:
Great, everything is working fine now. Rooted with Magisk:)
[LG V20 Guides, News, & Discussion] Lgv20ME1:
I am now getting random kernal crash. And also search function in setting dont work....my video record dosnt work either... This is all reported problems but for those wondering if they have been fixed....they have not at least not in the kernal and root method provided here....

Althou i have heard of some 2000kernal or something...i might go ahead and try and flash that...althou i dont know how to do it...i will try...
[LG V20 Guides, News, & Discussion] pranciskus2:
You can try LOS