yashsingh1/xdaforums huggingface dataset:
[LG G8 Guides, News, & Discussion] AsItLies:
You can actually prove that pretty easily. It's a specific xml file (forget the name at the moment) that determines how many bars to display re signal range. I've taken the specific xml file from kor rom and replaced the one on us op rom with it.

boom, then you have all the bars showing just like the kor rom. It's a head fake.

edit to add: It's the rssi.xml file. If you just simply compare that file from the 2 roms, you can easily see what db ranges results in what bars to display. The kor rom is very generous in that regard.
[LG G8 Guides, News, & Discussion] ozakio:
Hello there, i have v50 5g (lm v500n) korea region, i unlocked the bootloader then install twrp then rootedt he phone

(am not sure if restored original abl_a & abl_b after unlocking, also i remember it was slot_-b on yellow in fastboot mode but am not very sure of this)

also the phone transformed to lm g850n.

i entered twrp to install pixel experience rom

i installed it on slot_a & then reboot to slot b and rooted the phone there

(maybe i rooted on both a & b)

then the phone worked fine for like 1 mounth & someday the battery level get to 5% and the phone shutted down after a while, the battey was like 4 or 3 and i stared to get bootloop, the phone reach google logo & reboot again & again

i tried to wipe data and cash, i tried to factory reset, i tried to reinstall the custom rom i get the same bootloop

i flashed the original firmware using LGUP (the phone is detected as v500n not g850n also its v500n on fastboot mode), the problem didnt solved, i still get to the erasing screen then the 5g logo dosent complete then reboot some times like this, then the phone start go to fastboot mode after the erasing screen.

i tried to restore abl and boot a and b from extracted kdz files the flash again but i face the same problem

i tried to restore this images:

xbl, xbl_config, xbl, xbl_config, tz, hyp, boot, cmnlib, cmnlib64, abl, raw_Resources, laf, all both a and b from the extracted images of the official kdz

then i tried to flash again but nothing changed.

the phone still able to get into fastboot or download mode or edl

i was going to try this methode by using this firmware

Download LG KDZ Firmware V500EM40B_00 / SWC of LG V50 ThinQ 5G (LMV500EM)

Download LG KDZ Firmware V500EM40B_00 / SWC of LG V50 ThinQ 5G (LMV500EM) for free and max speed from LGROM.com.

lgrom.com

its for v500em not 500n android 12 and diffrent region

can this help??????

please reply..
[LG G8 Guides, News, & Discussion] ozakio:
also my phone is readed as "Quectel QDLoader 9008 (COM11) )" on EDL mode
[LG G8 Guides, News, & Discussion] Surgemanxx:
Here is the open factory A12 firmware for the V500n variant.This should bring it back to stock.

LG V500N | LG V50 ThinQ 5G | Version: V500NO40b_00_OPEN_KR_OP_0524 | Firmware for Region: KOR from - Lg-firmwares.com

LG V500N Download the latest version of firmware | OS Version: Android 12 Snow Cone | Firmware version: V500NO40b_00_OPEN_KR_OP_0524 | KOR - Fan club LG-firmwares

lg-firmwares.com
[LG G8 Guides, News, & Discussion] ozakio:
i did the methode in this thread step by step first the flash reach only 4% the i erase system, vendor, product, boot (a and b) and flash partion dl mode the flash goas normal but this time am stuck on lg v50 screen didnt even reach U+5G screen,

i did it with this one

V500EM40b_00_OPEN_EU_OP_0517 (android 12) for v500em,

now i go back to original android 11,

i think the reason of the prblem is that when unlocking bootloader i used modified abl for g8x not v50 and i didnt put back original abls, thats why the model number transformed to g850n intead of v500n, then i flash custom rom and i get the bootloop problem while the abl files in the phone still the g8x's files, this is a screenshot i took just before installing pixel rom.

i tried to put back abl from v50 firmware, nothing help,

i dont know if i should put g8x original abl or boot images, i really dont know and am afraid to brocke it totally!

(a friend me that this is maybe fixable with jtag)

is it useful to flash with this open v500n a12 firmware and do i flash with refurbish proccess or partition dl, or there is other solution???
[LG G8 Guides, News, & Discussion] ozakio:
🔼🔼

(the phone was g850n in model number but still dtected as v500n in lgup and in fastbootmode)
[LG G8 Guides, News, & Discussion] netmsm:
Flash the original xbl, xbl_config and abl on both sides, A and B.
[LG G8 Guides, News, & Discussion] digiciber:
on this page placing the imei in the lg free inf section gives you all the data including the S/N to restore it https://sickw.com/
[LG G8 Guides, News, & Discussion] digiciber:
A previous query was with A10 from the company T-Mobile, I did crossflashing with the Canadian version to A11, I want to go back to the A11 version but from T-Mobile to do this I must do the procedure as a normal crossflashing or do I have to do some step additional since I am rereseando to the stock version. Thank you. another query that kdz korean version recommend.
[LG G8 Guides, News, & Discussion] Bahmale:
No I test write lg v60 imei and work find , but lg g8x can write imei and when put sim permlock but imei still show fine
[LG G8 Guides, News, & Discussion] Bahmale:
Just use lgup pdm to correct model number that all
[LG G8 Guides, News, & Discussion] Surgemanxx:
That's because it's been modified is the reason you get the permalock error.With any of the 8150 chipsets they all do it if the IMEI has been modified at any point.It's embedded in the chipsets itself.And with the V60,at byte 14000 you can set the original IMEI it's fine,but you can't change it to anything other than the original IMEI for the device I have found so far.
[LG G8 Guides, News, & Discussion] dalponis:
I managed to cross flash, but it set my IMEI to 0.

I managed to get my IMEI reset to what it should be but the phone still complains about a perma lock.
[LG G8 Guides, News, & Discussion] Bahmale:
You can change v60 to any imei numbers also work fine no permlock
[LG G8 Guides, News, & Discussion] Surgemanxx:
Different chipset 8250.
[LG G8 Guides, News, & Discussion] Surgemanxx:
It's a security patch they have embedded in the 8150's.Netmsm suggested making a backup,and doing chip erase and he had success modifying his from what I have read.
[LG G8 Guides, News, & Discussion] Bahmale:
I test lg v60locked to Verizon , att , t mobile all work fine and unlocked after imei write
[LG G8 Guides, News, & Discussion] Surgemanxx:
Yes,chipset 8250 is why.8150 is different.
[LG G8 Guides, News, & Discussion] Bahmale:
I know lg v60 sm8250 chipset , and for lg g8x chipset 8150 ,
[LG G8 Guides, News, & Discussion] luffyacekun:
Hi, I cross flashed my lg v50 sprint to 500em, everything work fine, but phone never deep sleep at all, battery drain as hell, any one face this issue?
[LG G8 Guides, News, & Discussion] irfan64672:
after recovering from hard brick my v60 verizon is network lock. I have the backup of Modemst1 Modemst2 FTM FSC FSG. but after restoring them it is still locked. and IMEI is zero
[LG G8 Guides, News, & Discussion] netmsm:
Sounds like the backup files have not been created correctly.
[LG G8 Guides, News, & Discussion] tofik33`:
Did anyone encounter proximity sensor problem after crossflashing? I crossflashed two units of LG V50 and now proximity sensor is not working on both of them. Maybe should I flash some partition from stock ROM? Any suggestions which partitions to try?
[LG G8 Guides, News, & Discussion] netmsm:
Recently I got a V50 and I faced that too. To overcome the issue I created a full backup of the original firmware then flashed the phone through "chip erase". After that, I re-flashed through "Partition DL" then restore LUN5 partitions and FTM, and now it's working well.

To re-flash after "chip erase" you need to follow the instructions for crossflashing beside erasing these partitions: vendor, system, product, boot and user data.

It worked for me but I cannot guarantee that it does for you.

Anyway, before you go for it,

create backup of LUN5 and FTM

at least.
[LG G8 Guides, News, & Discussion] DiegoKcrz:
Dear hello, a query, I have a g8s from the operator entel peru, the procedure for crossflash is the same as in this tutorial or it can only be updated by LGup, can someone guide me before making a mistake, thanks.
[LG G8 Guides, News, & Discussion] netmsm:
Hi =) I'm not sure, so you had better have created a full backup before proceeding to preforming crossflash via this tutorial. At least, make a backup of LUN5 and FTM so that they can be used in an emergency.
[LG G8 Guides, News, & Discussion] DiegoKcrz:
Gracias por tu respuesta bro, siempre tan atento, una consulta, he visto que con el LGup con la opcion de "refurbish" se actualiza de android 9 a 10, o de 10 a 11, solo cuando es el firmware correcto que le corresponde, por su operador y país. tengo esa duda

Mod translation: Thanks for your answer bro, always so attentive, a query, I have seen that with the LGup with the "refurbish" option it is updated from android 9 to 10, or from 10 to 11, only when it is the correct firmware that corresponds to it, by your carrier and country. I have that doubt
[LG G8 Guides, News, & Discussion] luffyacekun:
https://xdaforums.com/t/guide-crossflash-v450pm-to-v500em-android-11.4342455/

in this thresh, in step 6 there is a modem file, I flashed it to my phone, now everything work fine. Hope this help others are facing this issue.
[LG G8 Guides, News, & Discussion] netmsm:
You're welcome bro =)

We can flash the phone using "refurbish" or "update" to another version of the original firmware but when we're gonna crossflash to a different firmware we need to choose "partition dl" and uncheck "sid" partitions.
[LG G8 Guides, News, & Discussion] IIzoriaII:
Hello, first of all, good job, a question, friend, I get an error, sahara, and I was looking, I think it is the firehose, my device is a sprint LG V50, the drivers are installed, but to back up and delete the partitions, it does not read it because of the firehose, I already used it both in this forum and nothing, I would appreciate if you help me.
[LG G8 Guides, News, & Discussion] Surgemanxx:
Try this firehose!It should work with no issues.
[LG G8 Guides, News, & Discussion] netmsm:
Hi =)

This is not because of firehose, I've used it on my V50. Just quickly open partition manager as soon as the phone goes into EDL mode.
[LG G8 Guides, News, & Discussion] suifong:
I have a V510N(Korea V50S) LGU+ try to crossflash to G850EMW(G8X) TWN

Because I want to use volte in my area with non-root phone

The two phones are very similar except for the RAM size

V50S 8G RAM/250GB ROM

G8X 6G RAM/128GB ROM

I followed the instruction and got this error

(I can crossflash to OPEN KR ROM but can't to G850EMW.So I guess it shouldn't be a step error)

I think it might be because of the different size of memory or storage space

Although it was unsuccessful

But thanks anyway for this guide

USE GOOGLE TRANSLATION
[LG G8 Guides, News, & Discussion] netmsm:
Even if it was successful the phone would not work properly because their modem are different. However if you can flash it to Koran version of G8X then you may find it doable to flash from Korean to the desired KDZ.

For VoLTE did you follow this guide?
[LG G8 Guides, News, & Discussion] LGelashwili:
I flashed the firmware like the given tutorial, and the phone turns on but during the setup screen, it crashes (SYSTEM UI isn't responding). Can anyone help me how to solve this problem?

I have tried US_open and CAN_OP firmware of android 11.
[LG G8 Guides, News, & Discussion] LGelashwili:
I was trying to set up without Gmail, that's why I had this problem. I flashed Android 10 and signed in with my Gmail after this flashed android 11 and it worked.
[LG G8 Guides, News, & Discussion] suifong:
Yes I had been try this

[GUIDE] [NO ROOT REQUIRED] [EPIC UPDATE] How to add VoLTE support for other carriers to the G8 (and other Qualcomm powered LG devices too!)
[LG G8 Guides, News, & Discussion] netmsm:
Yes that's right, Korean ROMs do not have Field Test option. You may use the attached APK to activate the 9091 (QMICM) driver on the phone but it requires the phone to be rooted.

This method may cause phone to get stuck in a boot loop during which the 9091 port is working until phone is connected to PC. So do what you need to get VoLTE then perform a factory reset to get rid of boot loop.

After all it is possible to revert to lock state.
[LG G8 Guides, News, & Discussion] IIzoriaII:
entra en modo EDL pero cuando abro particion del administrador me da ese error y cambie el puerto usb pero me sigue dando el error o si saben la solucion se los agradeceria, igual gran trabajo con el tutorial, gracias
[LG G8 Guides, News, & Discussion] netmsm:
First, use the rear USB ports.

Second, once the phone goes into EDL quickly open partition manager and do not linger.
[LG G8 Guides, News, & Discussion] faisal_parves:
getting this error? @netmsm need help brother.
[LG G8 Guides, News, & Discussion] Sylvester24:
It worked for me. I have moved from lg g8 att android 10 to open canada android 11. I love this android 11 canada firmware. I followed the instructions and I successfully flashed.
[LG G8 Guides, News, & Discussion] netmsm:
Send me screenshots of download mode that show the status of the phone before and after performing the instructions.
[LG G8 Guides, News, & Discussion] olaglam:
Can I install g8x G850EMW ROM on a g8x that comes with G850UM ROM?
[LG G8 Guides, News, & Discussion] netmsm:
Yes, but I don't know if it will be working perfectly on your device.
[LG G8 Guides, News, & Discussion] olaglam:
Thanks, I saw an India android 12 kdz EMw rom which I will love to crossflash on my att g8x, let me try it anyways
[LG G8 Guides, News, & Discussion] suifong:
I tried using the attached AsusVoLTE-1.0.1.apk

But it can't be used, even though I have rooted my phone, it says there is no root
[LG G8 Guides, News, & Discussion] faisal_parves:
Somehow I managed to flash my g8x with g850emw kdz by following your instructions but now it's showing this whenever I reboot the device. Except this everything is working fine.
[LG G8 Guides, News, & Discussion] olaglam:
Having the same issue when I flashed open ca um on my g8x but everything work perfectly on my phone, from which ROM are you on before flashing the EMw?
[LG G8 Guides, News, & Discussion] netmsm:
Ignore the error or search this thread for information about how to resolve it.
[LG G8 Guides, News, & Discussion] faisal_parves:
From official sprint g850um to open ca g85030a to g850v40a.
[LG G8 Guides, News, & Discussion] olaglam:
Ok nice thinking of moving to EMw a12 too from att um
[LG G8 Guides, News, & Discussion] IIzoriaII:
I already did it try changing ports use laptop windows 11 and pc windows 10 different ports deactivated driver verification I get the same error sahara
[LG G8 Guides, News, & Discussion] netmsm:
Try another USB cable.
[LG G8 Guides, News, & Discussion] merrol10:
Hi, I flashed my LG-850UM to G850EMW40A (A12) I am from the Dominican Republic but now my phone says ''Network Locked'' I have a friend who has the same Sprint variant as me, he flashed and does not have any issues, any thoughts on what could possibly be the issue? now I know how hard it's to get the Sprint A10 kdz

Thanks a lot in advance.
[LG G8 Guides, News, & Discussion] netmsm:
Hi =)

It seems your phone is network locked, especially if LUN5 is intact and you can see the phone's IMEI. The phone should be restored to Sprint ROM or get unlocked using Octopus box. Just to test your luck, try restoring original FTM.
[LG G8 Guides, News, & Discussion] merrol10:
I restored the FTM but no luck, what could be the next step? I don't mind going back to stock ROM as long the SIM works at least. I did backup for these partitions only FTM, Modem_A, Modem_B, SID_A, SID_B, OP_A, OP_B
[LG G8 Guides, News, & Discussion] animo214:
Might help someone with NT-Code problem

(I'm not an expert or anything, just a dumdum who happened to fix his problem, hopefully yours too)

I AM NOT RESPONSIBLE FOR ANY HARM TO YOUR PHONE!

am also not sure if a tutorial like this already exists, or this is a common knowledge for everyone else

I can't find something similar.. again.. just a dumdum :D

**ROOT NEEDED**

this is presuming you're already rooted (the app used needs root permission)

you'll need Solid Explorer app, give it permission (I think you can use other root explorer but this is what worked for me)

I experimented and just added a Line on

cust_path_mapping.cfg

Spoiler content hidden.

^ this is the line I added (which worked for me)

try rebooting after adding this line, and see if you still get the NT error, if not anymore.. then CONGRATULATIONS!

if you're still getting error, then try replacing the number based on the error you're getting.

again, I'm not an expert.. this may or may not help you on your error..

sorry for my english, it's not my mother tongue.

see attached pics for guide/reference and file path.
[LG G8 Guides, News, & Discussion] netmsm:
Your luck is as good as mine. A full backup is needed to restore to stock Sprint. Find someone who can give you a backup of all partitions. Here it is explained how to create a full backup and restore it.

Otherwise, the phone should be unlocked using Octopus box.
[LG G8 Guides, News, & Discussion] felixpaz1992:
Hello everyone, I wanted to know if you can advise me I have an LG LM-G820UM with software G820U21f (A10) Brand says (Sprint) although when it starts or shuts down no Sprint logo appears and when I click on search for updates none appears, I wanted to make a cross flash of LG 8X (A12) what region or KDZ file do you recommend?
[LG G8 Guides, News, & Discussion] IIzoriaII:
also original from lg motorola and huawei continues with the same
[LG G8 Guides, News, & Discussion] Cposey40:
I crossflashed my unlocked att g8x to open ca 20j but cannot make calls now. Text works but I cannot make calls. Not sure why
[LG G8 Guides, News, & Discussion] irfan64672:
I have V60 Verizon I am unable to restore my original IMEI it shows permanently locked everytime I boot with 0 IMEI
[LG G8 Guides, News, & Discussion] Emmy_inkk:
My model is g850EMW and after a bad flashing I believe, my phone now shows up as g850UM and I used this method to flash it back but it doesn't change model. I flashed my original firmware (g850EMW DEU version). Any suggestions would be appreciated.

Edit: My second IMEI number is also missing
[LG G8 Guides, News, & Discussion] netmsm:
G850EMW is dual sim which will lose second IMEI when it is flashed to another singular sim version.

1. Flash the original dual sim firmware.

2. Create backup of all partitions in LUN5 (modemst1, modemst2, fsg and fsc) using Qfil.

3. Erase modemst1 and modemst2.

4. Restart the phone.

It should now show the second IMEI.
[LG G8 Guides, News, & Discussion] felixpaz1992:
Hello and sorry for the inconvenience but could you guide me how to eliminate the annoying NT Code message, I have a backup of my stock ROM (Sprint) how do I find out the Sprint NT code and how do I edit cust-patch?
[LG G8 Guides, News, & Discussion] Emmy_inkk:
I'm grateful for the reply thanks again. But unfortunately for me, this did not work for me. I don't know what I'm doing wrong here honestly. I'll keep on trying to see if I can find a solution. Thanks again and if you have any other thing for me to try I will.

Edit: I was thinking I was flashing wrong stock rom, but I searched with my IMEI number and it shows G850EMW(DEU). So now I'm left confused.
[LG G8 Guides, News, & Discussion] netmsm:
Glad to help =)

What does it show when you dial *#06#?
[LG G8 Guides, News, & Discussion] Emmy_inkk:
Just a single IMEI. Doesn't show the second
[LG G8 Guides, News, & Discussion] netmsm:
What do you have in network settings for dual sim configuration? Does this configuration exist?
[LG G8 Guides, News, & Discussion] Emmy_inkk:
I can't find such settings. My phone shows just 1 sim card cos the model is now G850UM
[LG G8 Guides, News, & Discussion] netmsm:
Find the same phone and make a full backup of it then restore the file on your phone, except LUN5.
[LG G8 Guides, News, & Discussion] Emmy_inkk:
Thanks for the reply again. I'll have to find someone with the same phone now😥

Thanks again.👍
[LG G8 Guides, News, & Discussion] Cuonglla117:
hi netmsm . i got an verzion g8 and i want to crossflash to g820n kor open , but i noticed that the korean ones have 3 cams , will it work on my verzion or need a modify . i want that cuz verzion signal strength was so bad in my country , thanks in advance
[LG G8 Guides, News, & Discussion] netmsm:
Look, your phone is dual sim but from what you said I inferred that the firmware on the phone does not support dual sim so you have to find a proper firmware or use backup of another phone.
[LG G8 Guides, News, & Discussion] Cuonglla117:
bro remember to do a full backup before doing anythings
[LG G8 Guides, News, & Discussion] Emmy_inkk:
Yh I'll do that. Thanks
[LG G8 Guides, News, & Discussion] netmsm:
Hi =)

Yes that's right the Korean version's camera is different and you need some modification. Though, I did the modifications explained here and got the camera working, other guys couldn't apply the modifications.
[LG G8 Guides, News, & Discussion] Cuonglla117:
after that i can unroot and use my phone normally right ? another question how can i get rid of nt code error on boot ? thank you
[LG G8 Guides, News, & Discussion] netmsm:
For NT-Code error read this.

Yes you can unroot, but bootloader should remain unlocked.

Remember, before modifying the phone you need to disable verity or else modification won't work.
[LG G8 Guides, News, & Discussion] TPMJB:
I've got a little bit of asspain from this. I finally was able to crossflash the Korean KDZ to my V50. I'm trying to install Magisk, and no matter what I try I can't flash the patched boot images in QFIL. I just get a failure and QFIL crashes.

-I installed Magisk manager.

-I patched my backed up boot images that I backed up after the KDZ flash was successful

-I get a failure when I load the files in QFIL

This wasn't an issue when I was still on the V450PM.
[LG G8 Guides, News, & Discussion] netmsm:
Check for and remove "space" character in the path of files.
[LG G8 Guides, News, & Discussion] TPMJB:
Lol no way. I've been pulling my hair out for hours and that's all it is? I'll check it out in a bit.

Edit: WHYYYY. I spent like 2 hours dicking around with it last night and that was the issue. Thanks for helping me but I'm super annoyed lol. At least it's working now.
[LG G8 Guides, News, & Discussion] TPMJB:
Edit: Fixed my download mode by searching this thread, so fi anyone else has my problems, replace these in both slots A and B from a good KDZ:

abl_a

akmu_a

aop_a

cmnlib_a

cmnlib64_a

devcfg_a

dsp_a

dtbo_a

hyp_a

keymaster_a

laf_a

power

tz_a

uefisecapp_a

vbmeta_a

xbl_a

xbl_config_a

Hey so another issue. Apparently I'm supposed to be on the Open EU firmware for Horizon rom and not the Korean version. So I go into Download mode and I get a scary message saying "Your device has failed a routine safety check and will not boot."

Only happens when trying to boot download mode. Very strange. Advice would be appreciated.
[LG G8 Guides, News, & Discussion] netmsm:
Check if you're using engineering bootloader files on the phone!
[LG G8 Guides, News, & Discussion] TPMJB:
Oh, I fixed it. You can see from my edit above. Somehow I broke wifi though lol

Edit: I fixed wifi and data FINALLY. I restored my backed up modem files and everything is working. I have the NT code errors though, which I'll fix when I get around to it.

Thanks for all the resources in this thread! It's been a wild ride!
[LG G8 Guides, News, & Discussion] TPMJB:
Where did you find this US Cellular KDZ? I would like a backup.
[LG G8 Guides, News, & Discussion] AsItLies:
It's unfortunate, the way LG named these devices, that's why people have trouble finding the right KDZ.

if you search for lg g820QM firmware, you'll find it. they changed it in the name, instead of UM, it's QM, but they are essentially identical phones...
[LG G8 Guides, News, & Discussion] TPMJB:
Ah, sorry I mean for the LG V50. I had a US Cellular phone but there were no KDZs.