yashsingh1/xdaforums huggingface dataset:
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
It might be that you flashed a KDZ (with all partitions). Although this is just a guess. I have this running on my single SIM H990 and calls, wifi, data all work.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] LeTerrible:
Can you please check what ARB setting it's on? 0 or 1? Thanks
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
It's on 0
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] indongista:
Is rhis rom exclusively for h990n variant? Or can I flash this on my h990ds variant without expecting any issue?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] yplim2300:
Can flash on VS995?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
I don't see why it wouldn't work on the H990DS variant. It's working fine on my single SIM H990 variant. Just make sure to do an extensive backup.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
No I wouldn't, that's too far from the H990 family.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hahmad78:
i am already running v20h h990n rom on my h990ds ame variant. [MENTION=293102]ND[/MENTION] sim issue is present in v20f and v20h roms for h990n variant. i am using h990n roms from last year on my h990ds variant for experiment of VOLTE.

the solution for 2nd sim issue can be resolved by backup and restore efs, firmware, partitions in twrp from working 2nd sim rom to this one.

i have rectified it and so i am using 2nd sim on h990ds with v20f for h990n.

---------- Post added at 11:06 AM ---------- Previous post was at 11:05 AM ----------

dear you are using single sim , thats why can not notice 2nd sim signal issue.

single sim also worked fine for me. now i have got 2nd sim in working too.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hahmad78:
dear, volte works on your h990 single sim? do you get HD icon display during call?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
I just checked and no, it doesn't display HD when making a call. But I believe this is down to my carrier not supporting the feature.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hahmad78:
can you please upload the nt code ? i have attached nt code for h990ds . i have tried many codes, and combinations, still no gain.

as far i have checked roms for all variants, almost same except some data missing in ipsec folder in root/data for carrier specific and modem sw mbn files.

i use lg up patched for kdz flashing, in that way, keep roots and no hassle, very simple and easy, and you can select which ever partition to flash. no data loss for me uptill now .
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
I'm not sure how to get this? Is there a simple guide available?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hahmad78:
*#546368#*990# by using this code, you will enter in hidden menu,

---------- Post added at 10:53 PM ---------- Previous post was at 10:46 PM ----------

Sorry, my bad, bu using following code *#546368#*990# , you will get hidden menu, there , go to SVC MENU, and than VERSION INFO, you will see nt code there,

2nd method, by using adb shell, type following command, it make a copy of misc partition on your sd card, open it in hex editor, there you will find all information related to mobile, imei, mac address, nt code, software version etc.

dd if=/dev/block/platform/soc/624000.ufshc/by-name/misc of=/sdcard/misc.bin

By following command , you can flash this or by changing name(misc.bin) any partition, put the file on sd card , than run following command. It could be run through terminal emulator too or from pc, through adb shell, than su and than following command

dd if=/sdcard/misc.bin of=/dev/block/platform/soc/624000.ufshc/by-name/misc
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
Thanks, here it is:

"1","FFF,FFF,FFFFFFFF,FFFFFFFF,72"

Hope that helps in some way?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hahmad78:
i would try it to check volte. Thanks a lot.:good:

dear you are active on bbs forum. can you please try to get h918 t mobile, nt code too.?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] mikekote666:
You got it working now?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] mikekote666:
I suggest replacing the raw resources with the one that hide the boot warning screen
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] LeTerrible:
Has anyone seen this page?

https://xdaforums.com/pixel-2/how-to/guide-enable-volte-unsupported-carriers-t3892659

I can't get the QPSTdrivers to install as I am not getting anything in PDC. Can anyone please look into it for getting VoLTE running on H990DS?

Cheers
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] ali-nsr:
that rom is perfect in h990ds. its amazing no lag best performance less battery drain everything good tanks dude
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] SeiferTV:
Do you still have to confirm when you turn on/off the mobile data ? That pissed me off to no end on the official rom, lmao.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
I feel your pain, unfortunately yes, it's still there. I've been looking for a way to disable it, including the pop-up of devices when enabling Bluetooth.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
It is smooth! Was surprised by that, no lag yet and its been a few days. Are you running mk2000 kernel?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] ali-nsr:
i use that rom for 3day and i use mk2000 2.1 for h990ds
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] indongista:
Did you back up and restored the efs and firmware partitions after flashing this rom or you just flash this rom without restoring efs and firmware partitions. I too have a h990ds variant. Currently at rooted oreo provided by reza_xdv specifically for h990ds variant.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] SeiferTV:
There should be something out there since I think many (if not all) devices running oreo are dealing with that. I'll see if I cand find something too.

EDIT:

I think we can use something like Custom Quick Settings in the mean time. I'll test it out on the weekend.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] askermk2000:
A suggestion.

Someone should send an e-mail to LG (from their open-source page) and ask for an updated source drop for H990*

I could do it, but I've already done it a few times for H850, and possibly could be better if I don't ask to many times

for all sorts of devices. The occasions I've done it they've released the code rather promptly.

It's a bit baffling that there's no Oreo source available for any H990* apart from the initial release. It must mean that

nobody's bothered asking.

It would be beneficial for me to take a look at that source, as LG might have introduced some H990 specific changes

that are necessary for proper kernel function. There have also been complaints from some H990 users.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] ajp558:
Request formally submitted via LG Open Source Code Distribution web page as suggested. It's the least I can do in return for the many month's I have benefitted from your excellent work on mk2000 kernel for the V20, for which I am truly grateful.

Cheers,

AJP
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
Thanks for the heads up. I've also sent an email to them via that channel requesting for the latest Oreo source to be released.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] askermk2000:
Thx, I'm sure they'll release it within relatively short time.

Some H990DS users has had bugs apparently, maybe this can help get to the bottom of it (if it is in fact something related to the kernel).
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] ajp558:
The combination of this ROM and the mk20000 2.1 stable kernel is working great for me these past few days. Thank you to both jl10101 and askermk2000. It has been great having good performance and battery life, but also having the 2nd screen working properly again with the return of the chosen app shortcuts which I have missed previously since upgrading to Oreo.

Cheers,

AJP
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] reza_xdv:
New sources are available:

http://opensource.lge.com/osSch/list?types=ALL&search=H990
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
Seems these are still 20a sources - not sure if these are new. Seems like the original Oreo sources released.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] reza_xdv:
Previously there was only H990TR 20A. Today the list has changed and they also added H990DS, H990V etc
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
Then it seems the flurry of emails worked :o
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] faeterov:
Hi all, I have a problem with one of my h990ds that I cant seem to resolve. I've used dirtysanta on the H990ds susccesfully when we were on nougat, but now...

Starting from 10b firmware stock, I apply dirtysanta succesfully, then go to twrp, backup efs and firmware as the OP sais, wipe everything (system / data/ internal storage / dalvik / cache), install 20h like the OP says, restore EFS and firmware, install mk2000 kernel, remove battery, reinstall battery and boot...... but I always get a "safe boot" counter askingme for a password... I've deleted everything two times, started from scratch, but allways get to the same splash screen. I'm on 21 attempts of 30...

Anyone can help?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
I'm taking a guess here, but it could be because you have restored and EFS and FIRMWARE partition from Nougat onto an Oreo installation. What I would suggest above all else right now, is not to exceed those attempts.

Plug the device in, boot to TWRP and backup all your stuff. I had a similar situation and lost everything.

I would start again at Nougat, flash an Oreo KDZ specifically for the H990DS, boot, check everything is working, and only then backup the EFS and FIRMWARE partitions and flash this ROM again.

This is an irritating procedure, but it's better to take the long way around with more surety of getting it right!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hahmad78:
Dear [MENTION=4442887]jl10101[/MENTION] seems quite right, firmware partition contains information rpm,tz,sbl1, etc.

As nougat and oreo are different, thats why you are getting problem, [MENTION=4442887]jl10101[/MENTION] suggestion is best, to flash full oreo kdz to avoid any risk.

But if you could wait, i can upload twrp back up of said partitions. But you will have to wait 9hrs atleast bcoz in my country it is 01am,
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] faeterov:
That would be great. This aint my main H900DS, so I have no hurry.

I'm also doing the procedure has he said, but your help would also be appreciated.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hahmad78:
Here is the link of twrp backup.kindly read full and undestand and than do anything. BACKUP ALL YOUR DATA, AND TWRP BACKUP OF EVERYTHING AVAILABLE OPTIONS IN RECOVERY SO THAT COULD BE USED IF SOME THING BAD HAPPENS.

https://drive.google.com/file/d/12C_p0w_Lroaiwh5MX9S-zUfg_zQ6Zh-0/view?usp=sharing

but fully understand, i am not responsible for any damage, and trouble and data loss ,phone loss.

restore this backup fully, it contails efs,laf,fimrware,recovery. After restore, hopefully your mobile will boot normal but imei will become 0.MOBILE WILL WORK NORMAL BUT WILL SHOW IMEI 0.

efs partition which you saved earlier of your phone, replace it in this backup and flash again. only EFS.

HOPEFULLY IT WILL RESTORE ORIGINAL IMEI.

IF THIS DOES NOT HAPPEN, THAN FLASH KDZ THROUGH LG UP PATCHED VERSION USING PARTITIONDL OPTION, When prompted to select options, select eveything except, ABOOT, ABOOT.BAK, RECOVERY, RECOVERY.BAK, AND FLASH.

IMPORTANT, WHEN MOBILE WILL REACH 80% , IT WILL REBOOT, STOP ITS NORMAL BOOTING PROCEDURE AND BOOT IT INTO TWRP AND FLASH OREO KERNEL AND MAGISK MODULE TO GET ROOT.

THAN REBOOT NORMAL.

IN CASE OF ANY CONFUSION, PLZ DO ASK

---------- Post added at 10:31 AM ---------- Previous post was at 10:18 AM ----------

DEAR DEV, kindly update OP, and mention backup and restore of oreo partitions, maybe someother could also be confused.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
OP updated. Thanks for helping out like this!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] giriraj121:
If anyone forgot to take efs backup like me on 990DS... you will lose SIM 2 function. Don't worry take efs and firmware backup now then follow this on terminal emulator in twrp.

Linkhttps://www.theandroidsoul.com/fix-empty-imei-corrupted-efs-no-sim-unknown-baseband-wifibluetooth-issues-restoring-twrp-backup/
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] faeterov:
Yea, I'm, an idiot. Problems was I was wiping the partitions, not formating them.

Just went with restoring the partitions from android n to android o without a problem.

Do you guys think I should restore the backup that [MENTION=5052443]hahmad78[/MENTION] kindly uploaded, or should I stay with the backup made from android N?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hahmad78:
when restore from twrp backup, twrp automatically format the partitions where to be restored.

if you are on oreo, and have backup of efs, than go for backup i uploaded, if not, and want to be secure, and fool proof process, go to nougat and than re root and than again oreo, backup of your rom and than do any thing, or experiment.

choice is yours, either way, you will get oreo you want.

if i am in place of you, i will go for twrp backup uploaded, because downgrade to nogat option will still be there if first not happen.;)
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Evtoda Gi:
Hey guys,

I have a similar problem on a H990N dual, but the "safe boot passwort"-issue came after flashing kernel and magisk1.8.1 on 10b nougat at first and I never manage to get root access. I tried multple times go back to stock, and root again, but everytime the H990N dual stucks on the "safe boot passwort" issue. The I formated internal storage and flashed kernel and Magisk1.8.1 again, and the phone booted normally but I had no root again!

So I decided to try the oreo ROM of this thread, but I get the same password issue. After I format data the rom boots, but also without root access, aaa and now also without the IMEIs :-/ and I am not sure if the 2nd SIM ever worked. Is it possible to activate 2nd SIM only without having a sim in the first slot? this never worked!

So I gave up root access made every thing by hand and via LG Backup again and also made a TWRP Backup and tried to get my IMEIs back. After multiple tries, downgrades, upgrades and corrupt restore procedures I was really happy to get the backuped unrooted state without IMEI and root again!

LG Drives me crazy! Last year a bricked V10, this year a bricked and multiple times debricked V20 and still no root:rolleyes::rolleyes:! It can not be that difficullt to get root only...

So guys pleaase, WHAT THE FFFFFFFF***CK I AM DOING WRONG?

Nice greets from Germany
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
I must agree that LG have never been the easiest to gain root and to flash custom ROMs on with all the bootloader issues and finer details and incompatibilities.

Are you currently unrooted now on stock Nougat?

I would follow the root process again carefully making sure you have a vulnerable / rootable version of Nougat installed.

I'm not sure what the process is for the H990N, if it is or isn't the same as the H990 and H990DS.

If you can get it cleanly rooted on stock Nougat, it will be faulty simple to get this ROM running.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hahmad78:
Dear did you proceed according to directions given in DIRTY SANTA thread?

Secure boot password issue comes due to 2 reasons 1st could be un compatible KERNEL, 2nd could be the twrp.

kindly use same kernel and twrp as mentioned in DIRTY SANTA THREAD.

What about your 2nd sim issue and IMEI issue. did you solved it? do you have original imei (efs) backups ?

kindly write your current issues clearly and current status so that we could try to sort out things for you
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] mikekote666:
I'm just curious why in the zip in here why you don't delete the cust and modem so all wont get any sim issues no need for any EFS back-up for the DS users..
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Evtoda Gi:
Hi hahmad78,

My current state is H990N Dual running on the OREO Rom of this thread with MK2000 Oreo kernel and Magisk1.8.1 like on the first page said. But root ist not working with fixed IMEI and dual sim issue.

I have made an efs Backup of stock Nougat 10c (not 10b! It was delivered with it) bevor started rooting. Later after described root failure (exactly dirty santas procedure) i flashed like faeterov said:

Flash the Stock OREO KDZ THROUGH LG UP PATCHED VERSION USING PARTITIONDL OPTION, When prompted to select options, select eveything except, ABOOT, ABOOT.BAK, RECOVERY, RECOVERY.BAK, AND FLASH

After it, IMEI was 0 and I had bad and partially no LTE and Call reception. I restored my OREO backup except the efs partion (it worked not from first time), afterwarts I restored Nogat efs, so IMEIs came back, but thebad reception stayed. I manually selected band 20 only (the nost important in Germany) in the hidden menue *#546368#*990# and the LTE worked perfectly but no calls. The randomly found the Field Test/ Modem Settings/RAT Selection point and activated LTE/GSM and everything seems to work.

I see two IMEIs after diling *#06# but I have not tested the second sim slot yet.

At first few root trys I used exactly dirty santas procedure and files, aftorwords I updated the TWRP to the newest for flashing oreo. But whats wrong with the root? :-/

Thanks for helping guys.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] mikekote666:
You need to install Magisk Manager apk bro it's simple install and open it.If you had installed the 18.1 zip just reboot phone after installing Magisk Manager
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
This. +1

For some reason, and on the rare occasion, the Magisk Manager app does not install, so there is nothing to manage root requests (and the following pop-up that asks for root access).

Simply download the manager off the Magisk thread (link in the OP), or extract the apk from the Magisk.zip.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Evtoda Gi:
Guys,

this was the solution for my root problem! I installed the .apk from the Magisk ZIP file and root checker says that I got root!

I want to thank you all for your excellent support!

After one month of pain I finally got root and my phone is working! Hopefully the 2nd SIM issue is also gone, I will try this in a few month while beeing in Russia.

The next competition will be debricking a LG V10 (AT&T H900 with VS990 Mainboard) from "Marshmello hole".

Hopefully there is allready a solution using uppercut or LGUP pached version for downgrading to 5.1.1

If anybody here knows what to do, feel free to write me a message or a Post.

Thanks again guys!!

EvtodaGi
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] angilinmago:
i have h990n rooted with dirty santa and had h990-kernel-v0.2.4.

I have since installed super v20 rom with same kernel with no issues (tried MK2000 with super v20, didn't work)

now I want to install this rom, but i am have problem flashing the MK2000 oreo kernel, the ROM flashed ok, but kept on failing to flash H990DS_v2.1-mk2000, H990SS_v2.1-mk2000, H990DS_v2.0-mk2000. kept saying dumping splitting image failed error 1

can anyone help?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
Are you on the latest TWRP?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] mikekote666:
you need at least twrp 3.2.3-1 to do the process i think,someone correct me if i am wrong.Also try downloading mk kernel again (recommended clean flash) when switching from super rom.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] angilinmago:
managed to get it working, i didn't wipe the data after installing the rom, now mk2000 kernel installing fine

mikekote666, however I am experiencing same issue as you, i can't make calls, I am using h990N, i restored the EFS and Firmware uploaded by op above, hence my imei is 0, have you got your issue sorted?

anyone with h990n got it working smoothly? how did you do it?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
Try dialling *#546368#*990# and then Field Test / Modem Settings / RAT Selection and check LTE / GSM is activated
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] angilinmago:
warning: don't restore this backup above. I did it and my phone seems ruined, I can't make any calls with sim 1, I tried to fix the issue by flashing the stock kdz (first oreo, then 10e) using LGUP, no change at all, seems that something with phone's radio is permanently changed, and now i get very poor signal and can't make calls at all.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
Seems almost impossible to believe that not even an LGUP KDZ restore can fix that? Even a complete Refurbish?

I've messed up radio before by flashing a completely different variant but saved it with a KDZ.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] angilinmago:
does imei number have something to do with sim card recognition/signal strength/ability to make calls?

the only thing that hasn't changed is that IMEI remains to be 0 after stock kdz reset
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
Try dialling *#546368#*990# -> SVC Menu -> CRCWIZARD Test -> Auto MID (top right of screen)

Is there anything in IMEI there? Can you type in your IMEI into the IMEI field?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] mikekote666:
Boot into TWRP recovery.

From TWRP’s main screen, select Advanced » then Terminal.

Type the following commands in terminal (one by one):

dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst1

dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst2

Reboot device.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
[MENTION=8901538]mikekote666[/MENTION]

I've created and uploaded a version without CUST and MODEM.

Should this prevent cases like the above?

It's really odd, as this KDZ is actually an H990N KDZ!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] angilinmago:
is this the solution to the radio issue?

did you figure out why this happened?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] mikekote666:
It should cause it's the modem thing and cust doing the whole thing I have made my own zip deleting cust and modem or replacing with my own Region cust and modem

---------- Post added at 13:55 ---------- Previous post was at 13:53 ----------

It's a modem problem thing just do that and you'll be ok that's how I fixed mine
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
Give one (or both) of the posted solutions a try and let us know.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] angilinmago:
did it restore your IMEI?

i tried to do it in adb but it showed error system/bin/sh: dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst1: not found

system/bin/sh: dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst2: not found

any ideas?

---------- Post added at 02:12 PM ---------- Previous post was at 02:05 PM ----------

i think i ruined my phone for good, quite pessimistic about getting it back to normal modem function again, i should have never have messed with twrp restore.

---------- Post added at 02:14 PM ---------- Previous post was at 02:12 PM ----------

i was able to type imei into the field, hence change the imei for modem 1, not sure how to do it for modem 2 which still showing as 0.

but the connection/call/modem problem still remained