yashsingh1/xdaforums huggingface dataset:
[LG G8 Guides, News, & Discussion] kt-Froggy:
This is the thread I found: https://xdaforums.com/t/getting-access-to-recovery-combination-ftm-mod.4220523/

Note that these steps were described for a different phone and a different issue, and CAN'T be blindly applied here! It just gave me an idea of what could possibly be done. I know nothing about this other than what's described there, and won't be able to answer any questions if things get messed up. Please use this info at your own risk. And have a backup. And a backup of a backup, just in case.
[LG G8 Guides, News, & Discussion] tofik33`:
Unfortunately it doesn't work for me. When I load the edited FTM the NT-code no longer exists but my phone cannot connect to cellular network. Any ideas?
[LG G8 Guides, News, & Discussion] kt-Froggy:
No ideas, sorry. Like I said, it was just a "why not?" kind of thought which worked for me...
[LG G8 Guides, News, & Discussion] AsItLies:
From your posts, it's confusing if you've actually lost the imei or it's just not showing up when u go to settings? You say it works okay and detects sim? Then the imei isn't lost, it's just not showing up in settings? Which is it?

As far as a11 for us open? I'm just going by LG's track record. And, they have agreements, which are probably still in effect, to not release the Open firmware until all the carriers release theirs. So if any of the carriers fail to update, then the Open won't be released.

cheers
[LG G8 Guides, News, & Discussion] Toni Mahmud:
Why i don't have the option DL Partition in LG UP
[LG G8 Guides, News, & Discussion] Toni Mahmud:
My phone is LG G8 Thinq g820um10i at&t
[LG G8 Guides, News, & Discussion] AsItLies:
because u didn't follow the directions and make that UI file 'read only'.
[LG G8 Guides, News, & Discussion] Toni Mahmud:
yes this time showed up but I tried with Partition DL it show me Not Allow to change the device something of the sort :(
[LG G8 Guides, News, & Discussion] AsItLies:
then yer still not following the directions carefully. I know it works, I've done it, as have many others.
[LG G8 Guides, News, & Discussion] Toni Mahmud:
nothing works
[LG G8 Guides, News, & Discussion] brigantti:
I did the crossflash on lg g8 sprint and i was hoping that the conversion message show up but it did not it just flash the firmware.i follow the tutorial every step what did i miss?

I did verify flashing again and it fail i have to erase the partitions that the op mentions every time i want to flash a firmware.
[LG G8 Guides, News, & Discussion] Toni Mahmud:
I do not know what to do I am in the same situation
[LG G8 Guides, News, & Discussion] netmsm:
If you have already erased mentioned partitions and still cannot do crossflash please redo the whole step B in addition to creating backup and erasing these partitions of both a and b sides: vendor, product, system and boot.

Please give screenshots of "Download Mode" before and after doing this.
[LG G8 Guides, News, & Discussion] brigantti:
I did manage to crossflash but i wanted to convert my g8 sprint to open ca but i did not get the message asking to convert to open ca it just continue to flash as normal
[LG G8 Guides, News, & Discussion] netmsm:
That pop-up may or may not appear however it does not change the original OPID of the phone. You can forget about it.
[LG G8 Guides, News, & Discussion] Yeriorlando:
Hi bro. Thanks for the thread. I've converted my Sprint to Canadian rom, but I don't have LTE Data.. please any solution
[LG G8 Guides, News, & Discussion] brigantti:
Ok got it even if the message ask for to convert i still need to delete those 5 partitions everytime i want to reflash a kdz.i was hoping not to but is ok thanks for the tutorial it works great
[LG G8 Guides, News, & Discussion] Toni Mahmud:
No it didn't erase partitions it gives error Not Allow to change the devices
[LG G8 Guides, News, & Discussion] netmsm:
It sounds like you're not following instructions thoroughly. Every single step in this tutorial is necessary to gain result. If you miss any of them so you'll end up in failure.

Please redo the whole thing but give me screen shots of "Download Mode" before and after the works.
[LG G8 Guides, News, & Discussion] Toni Mahmud:
here :
[LG G8 Guides, News, & Discussion] netmsm:
Did you or did you not erase mentioned partitions?
[LG G8 Guides, News, & Discussion] Toni Mahmud:
I tried but again the same mistake it didn't erase partitions it gives error Not Allow to change the devices
[LG G8 Guides, News, & Discussion] gmangrove:
I need to do this for an AT&T unlocked G8X. I am in the UK and don't know what firmware to pick.

This one works apparently http://lg-roms.com/lg-firmware/lmg850um/g850um30a/12316 but it is only Android 11.

I would like to use this one: which is android 12: http://lg-roms.com/lg-firmware/lmg850um/g850um40b/13038

Would this be suitable and is a canadian Rom ok for the UK? Thanks!
[LG G8 Guides, News, & Discussion] zfk110:
Im getting error 0x6004

I tried Edit: I backed up and erased these partitions in addition: boot_a, boot_b, vendor_a, vendor_b, product_a, product_b and it seemed to work afterwards. this too still didnt work

what I had happened to me, I unlocked the bootloader first then I got twrp with magisk running then I wanted to upgrade to 12 and now I can;t do it

by mistake I also flashed verizon kdz on it too, since mine is sprint, please help
[LG G8 Guides, News, & Discussion] netmsm:
I do not understand what your problem is, sorry.
[LG G8 Guides, News, & Discussion] zfk110:
I bought this LG v50 and it is a Sprint phone I use the guide to root and unlock the bootloader for the TWRP and magisk while running on Android 11

On telegram I found Android 13 running rom I was told to upgrade to Android 12 and then flash the rom because it will not work with Android 11

I found your post and I was trying to cross flash from Android 11 to 12 using your method but I could not do it because I was getting that 0x60004 error about on your same post people suggest if I erase boot vendor product partition as well that I will not come I try that too and it didn't work I was still getting that same error I try different LG up

Someone told me on the telegram group just flash Android 12 kdz on it since I could not cross flash from 11:00 to 12:00 using your method

Without realizing that I had Sprint I used Verizon Android 12 kdz using LG up

Now when I try to boot up it just flashed lgv 50 logo and goes into the boot loop

I can still go into edl mode also I can go to download mode and I try to use unbrick guide to flash those files manually and after doing that phone does the same thing it would not boot just goes to the boot loop

So this is the situation I'm in
[LG G8 Guides, News, & Discussion] netmsm:
1. Make a backup of LUN5 partitions.

2. Restore original FTM; If it still does not boot properly then you have to try another different KDZ.
[LG G8 Guides, News, & Discussion] zfk110:
Since on a Sprint v50 I flash Verizon kdz when I'm trying to cross flash this is the error I'm getting, what should I do to change the model to Sprint and then try to cross flash, because no matter what I do it would not let me flash it and I don't have any other way to boot the phone all the way I'm still stuck in the reboot loop, what other kdz I can flash on this Sprint V50? I tried Verizon one and thats what got me in trouble
[LG G8 Guides, News, & Discussion] netmsm:
If you are doing exactly as the instructions say and still getting this error then there's almost nothing more I can suggest.
[LG G8 Guides, News, & Discussion] tofik33`:
I've managed to fix it. No nt-code error anymore.
[LG G8 Guides, News, & Discussion] StvOchi:
Thanks, netmsm and kt-froggy for the guides.

I figured out how to remove the NT code error without root.

You will first need a file manager that can access the root directory.

I personally used "Solid Explorer File Manager" to access the cust_path_mapping.cfg file to read the NT-Code that came with the firmware.

You can use the Solid Explorer File Manager to access the root directory by going to settings then scrolling down and checking the box "show root storage". You will now be able to access the root storage.

You can access the cust_path_mapping.cfg by going to root/system/product/OP. Then open the file and note the code. Mine was FFFFFF,82=/product/OP.

Create a backup of the FTM partition the open the FTM file with HxD app. (Make sure you have a copy of the FTM file in case something goes wrong)

Go to line 00014000 and edit the line. depending on the phone, edit the first 2 sets of numbers/letters with 3 characters separated by a comma. ("FFF,FFF), then the last set of numbers/letters with 2 characters to match the code in the cust_path_mapping.cfg file.

(Mine was

"2","310,120,FFFFFFFF,FFFFFFFF,FF","312,530,FFFFFFFF,FFFFFFFF,FF" and I changed to

"2","FFF,FFF,FFFFFFFF,FFFFFFFF,82","FFF,FFF,FFFFFFFF,FFFFFFFF,82") because I was getting NT code error

310120, 312530 ; FF, FF

Note:

1. The line could span from 00014000 to 00014040 like mine. Each line is separated with "". I had 2 lines and had to change both lines. You can have only 1 line

2. Make sure you don't delete the line but just select the content and overwrite it with new text. deleting might affect other lines below with content. ( I deleted some lines and my phone factory reset)

After that just save the FTM and load it to your phone using QFIL and the error will be gone.

I've only tested it on my LG G8, OPEN CA firmware so I'm not sure if it will work on others.
[LG G8 Guides, News, & Discussion] rvp_178:
After cross flashed

I got my device uncertificated in the google play protect so I can't use netflix or google wallet

Does anybody know how to fix this ?
[LG G8 Guides, News, & Discussion] bmportillo5:
Hello. Thanks for your guide. I ran into a problem: after I made the back-ups and erased the partitions mentioned in the main post, the phone booted into fastboot mode and I couldn't flash the new Android because it gave me a "Not allow to change device" error in LGUP. How can I restore the partitions if the phone won't boot?<

Nevermind, got it working. I'll update this comment after my brother tests it for some time. Thank you!
[LG G8 Guides, News, & Discussion] StvOchi:
Your bootloader is unlocked. You have to relock it. There are some other ways to bypass this but I haven't tried.
[LG G8 Guides, News, & Discussion] kt-Froggy:
Hmm... I have not seen an unlocked BL cause problems with Play Protect. My G8 is crossflashed and rooted with unlocked BL, and is still certified. Same thing was with my previous phone.
[LG G8 Guides, News, & Discussion] AAMIRALI034838:
SIR I DID NOT FIND OP_A AND OP_B FILE IN QFIL
[LG G8 Guides, News, & Discussion] netmsm:
Try harder please. It's impossible for them not to be there.
[LG G8 Guides, News, & Discussion] AAMIRALI034838:
i am using 901l japnese version..so plz need your help
[LG G8 Guides, News, & Discussion] AAMIRALI034838:
whenever i flash via lg up it says wrong image......since there is no rom availble for lg g8x japnese version
[LG G8 Guides, News, & Discussion] netmsm:
First of all, create a full backup of all partitions using Qfil.

Then read the guide completely and go for crossflashing.
[LG G8 Guides, News, & Discussion] AAMIRALI034838:
sir i read the whole guide but there are no OP_A and OP_B files in my device.

what shoul i do?

is there any alternative file for op_a and op_b ?????
[LG G8 Guides, News, & Discussion] netmsm:
Please give me the "PartitionList.xml" file of your device.
[LG G8 Guides, News, & Discussion] metalu5:
I would like to know if by crossflashing the Open Canada or European kdz version to my T-Mobile v60 will unlock the frequency bands used in Europe. According to the kimovil site, the T-Mobile variant of v60 does not support most European LTE and 5G bands. Thank you.
[LG G8 Guides, News, & Discussion] netmsm:
@AAMIRALI034838 I mean the XML file. Click on "save Partition File" button on the partition manager window to generate the XML file.
[LG G8 Guides, News, & Discussion] netmsm:
I don't know but you can try this:

1. Make backup of FTM partition.

2. Unzip and restore the attached file to FTM.

3. Check for bands.

If it doesn't work restore the original FTM.
[LG G8 Guides, News, & Discussion] netmsm:
@AAMIRALI034838 Create backup of these partitions: FTM, Modem, SID, Vendor, Product, System, Userdata, Core_nhlos on both A and B sides. Then erase them and go for crossflashing.

It is highly recommended to make backup of LUN5 partitions before crossflashing.
[LG G8 Guides, News, & Discussion] AAMIRALI034838:
ok sir i am going to try..thanks
[LG G8 Guides, News, & Discussion] Devon Allan:
I got problem when I use LGUP,it show error,can someone help me?
[LG G8 Guides, News, & Discussion] Bons007:
LG UP isnt installing showing this but lgromup,lg flashtool and qfil all working odin and all other softwares even windows isnt damage but its win 10 pro build 19h1 1903
[LG G8 Guides, News, & Discussion] netmsm:
Change the USB port and USB cable.
[LG G8 Guides, News, & Discussion] netmsm:
@AAMIRALI034838 You have to unzip the KDZ file before add it to LGUP!
[LG G8 Guides, News, & Discussion] netmsm:
Search for and find another installation file, preferably a ".exe" type file instead of ".msi" one, if it exists.
[LG G8 Guides, News, & Discussion] Bons007:
Just SOLVED problem by running lg up.msi by admin but we dont have any option to run it as admin so i copied it to windows partiton C Where it asked for permission to copy here as admin then i run it, so if its in system drive i.e C it ran as admin, WORKED FOR ME AND BROTHER YOU SO HUMBLE AND GREAT MAN REPLYING FROM 1ST DAY. LOVE U
[LG G8 Guides, News, & Discussion] Bons007:
I have g820um20b VRZ I will change to open_can like you, is it fine and tell me about how to disable dm verity as told here(Note: You need to disable verity on the phone in advance otherwise changes in cust_path_mapping.cfg won't be saved).

I Have verizon g8 Bootloader Unlocked+Magisk root is crossflashing by you work for me to get network unlock and sim work and can i change my model from g820um to g820qm, i also want custom roms plz guide me, many questions but plz andwer.
[LG G8 Guides, News, & Discussion] netmsm:
Go to Qfil. Dump vbmeta_a partition.

Restore engineering xbl, xbl_config and abl, just like when you did it for unlocking bootloader.

Go to fastboot mode and run these codes:

fastboot --disable-verity --disable-verification flash vbmeta_a vbmeta_a.img

fastboot --disable-verity --disable-verification flash vbmeta_b vbmeta_a.img

Not permanently but temporarily however it doesn't help.

I don't know about them, sorry.
[LG G8 Guides, News, & Discussion] Bons007:
i got bin file after vbmeta backup and i downloaded img file of vbmeta from internet and flashed it, after that i turn on phoen then i got bootloop after password attempt after verzion logo loads even i didnt locked my phone then it reboot so there ws bootloop, so i thought dm verity now disanled so i crossflashed succesfully but i have no network as my sim info is ok and imei also sn were restored in qfil by ftm, point is i got emergency on my phone there are signals recieving but no sms service working nor calling but sim is working, should i restore back modem and modemst on both slots in qfil?
[LG G8 Guides, News, & Discussion] netmsm:
Why didn't you just rename the ".bin" to ".img"?

It needs a factory reset, I'm afraid! But if there's another solution, I'm not aware of.
[LG G8 Guides, News, & Discussion] Bons007:
yea i thought but everything is working fine except i am getting phone not allowed for voice may be its issue with my netork provider right what u think, does vbmeta or dm verity has any connection with it(netrwok) if not then that vbmeta.img may worked but tell me man if i got ok imei ok sn then it must allow me netork is it right . means my phone netork is working if my sim n signals are there
[LG G8 Guides, News, & Discussion] debianmain1:
Quick question...I have done the cross-flash (US_ATT to US_OPEN) with the .KDZ that is a 20f....now that it is done, can I upgrade to 30c via a "normal" LGUP upgrade?
[LG G8 Guides, News, & Discussion] Bons007:
Phone Not Allowed For Voice does it means my Network is working but it's restricted from network provider right I just need to change Sim.

my sim has been detected sn gone restored by ftm, imei already there should need to restore or can i restore modem and modem st on both slots to get network back bcz i have emergency calls only i dont know whats going on i did (verizon to Open canada same firmware 20j) i want netork what is possibility i still having emergny,
[LG G8 Guides, News, & Discussion] Bons007:
Does No 16 Note Write IMEI means I can repair IMEI if lost it, Right like I don't have to pay octapus or any other ti repair IMEI I can get network for free, Write my 2nd LG IMEI will work right
[LG G8 Guides, News, & Discussion] netmsm:
I do not think so!

Right.

Yes if your phone does not have IMPL lock. Write IMEI and if it throws perm.lock then it has that IMPL lock and the only way to get work is through Octopus.

If you got backup of modemst1 and modemst2 then restore them and network will be all right.
[LG G8 Guides, News, & Discussion] netmsm:
No. It is an example of crossflashing which can be done via the guide.
[LG G8 Guides, News, & Discussion] Bons007:
Hey GOAT Look at this interesting thing happened here LOL! Plz tell me solution

Congs! I Successfully have crossflashed Verzon to open_Can with bootloader unlocked,

But i have serious Problem about Magisk root i.e When i try to root my lg g8 with magisk manager v8.0.7 (out dated) its working fine but we need everything in work like zygisk n lposed so i tried latest magisk app v25.2 by simply updating through magisk app(i also tried magisk v25.2 latest after fresh crossflash n factory reset) so my LG G8 Stuck at LG G8 THINQ LOGO ( sometime its screen just go blank at screen lock) my PC was Detecting its storage and ADB Was working(luckily i turned it on) so i tried all cmds to recover this but at last i got my phone into EDL MODE Using blind eyes bcz screen was working but no display after edl i flashed backed up boot_a/b but still same thing then i flashed stock rom in LG UP Which solved this issue so i again tried same magisk v25.2 and same thing happen screen goes black at lock screen so again i flashed stock rom. at last again i rooted my phone with old magisk manager v8.0.7 and now its working fine but i still want latest magisk on my phone with all latest features tell me solution.
[LG G8 Guides, News, & Discussion] netmsm:
It's been too long that I rooted G8 for the last time but I remember that I had some problems too. I think it was Magisk 23 by which I got results.
[LG G8 Guides, News, & Discussion] metalu5:
I will try testing this when I go to Europe next summer. For now, here in Canada I can confirm that the FTM you provided works fine but I am not able to tell if it enables new frequency bands since my provider only uses 3 bands, B66, B7 and another one that is not in my area. For now I reverted to my original FTM because of the "Check NT-code" issue.

Can you tell what version is this phone? I got it on ebay and it was supposed to be a T-Mobile, but I am not sure it is. I attach the info in the download mode screen. Thanks.
[LG G8 Guides, News, & Discussion] Zenozero:
My lg v50s phone has broken keys, power key and volume key. so my phone was locked during boot loading. I need a stock abl file, just open download mode.

i got this error after from android 10 to android 9.

i have tried wiping all partitions and flashing gpt , flashing the necessary partitions, but it still fails.

UPDATE.

I deleted all partitions by deleting all partitions of QFIL partition manager. flash the GPT files to the device using fh_loader. flash the necessary partitions to enter download mode using the QFIL partition manager. It's finally normal.

Ironically, it's partly because I removed the case to connect the edl pins. Therefore, the key circuit will be separated from the pins on the main phone, so there is such an error. Note that before I removed the back panel, it had a faulty button. hahaha.
[LG G8 Guides, News, & Discussion] Bons007:
Kindly explain 16 number note about imei write, I dont have IMPL Lock so this guide will be helpful for me to write imei, Right?
[LG G8 Guides, News, & Discussion] netmsm:
It shows the variant NA6_US which seems to me that the "NA6" stands for North America but I have no idea that the number "6" refers to which operator.
[LG G8 Guides, News, & Discussion] netmsm:
Yep =)
[LG G8 Guides, News, & Discussion] Bons007:
Can i use QCN Backup then edit Imei And Restore back through QFIL to Reapir/Edit imei in LG G8 G820N/UM or Tutty/PDM Mode Edit imei method is more stable and reliable
[LG G8 Guides, News, & Discussion] netmsm:
The method of editing IMEI via QCN backup is no longer working on these new devices.
[LG G8 Guides, News, & Discussion] Bons007:
How to enable Diag Port treid all but failed in LG g8 crossflashed
[LG G8 Guides, News, & Discussion] netmsm:
Dial *#546368#*820#

Go to SVC Menu

Go to Port check Test enable it
[LG G8 Guides, News, & Discussion] bmportillo5:
After some time of use, my brother's phone started freezing and just lost performance in some instances, like gaming. I made backup for all of the partitions mentioned in the post, including those you mentioned in the replies. I want to know if the process for downgrade is just restoring all the partitions to its originals
[LG G8 Guides, News, & Discussion] libels00:
Hello, I am a user of LG G8X ThinQ model number 901LG (Softbank version). Due to NFC got disabled from the Softbank itself, I want to flash to update the Android version and the software itself.

The thing is, I got stuck in Partition Manager process on QFIL due to this problem.

Then when I checked the connection of my phone, this occurs.

Have tried to reinstall the Qualcomm USB Driver, disabled driver signature enforcement, installing the ADB Driver. Any suggestions at what can I do to fix this problem? Please advise
[LG G8 Guides, News, & Discussion] netmsm:
That's right or you can flash a KDZ with lower version. Remember you do not need to flash or restore LUN5 partitions just make backup of them.
[LG G8 Guides, News, & Discussion] netmsm:
Try working on another PC and USB cable.
[LG G8 Guides, News, & Discussion] libels00:
Finally worked, but run into another problem when started LGUP.

They said that they can't find my phone, anything I can do?
[LG G8 Guides, News, & Discussion] netmsm:
Seems like there's a problem in the driver. Check for USB port and cable and reinstall the driver.
[LG G8 Guides, News, & Discussion] libels00:
Reinstalled the driver and downloaded the KDZ, but instead this occurs.

What should I do with this?
[LG G8 Guides, News, & Discussion] netmsm:
Bizarre!

If I were you I would make a full backup and then flash via "chip erase".
[LG G8 Guides, News, & Discussion] dansho1:
Just want to say thanks...your instructions were right on perfect and corrected my LG G8 NT-Code Error...good day mate!
[LG G8 Guides, News, & Discussion] Bons007:
ok
[LG G8 Guides, News, & Discussion] emilyrcc:
i cant download the LGUP 1.16.0.3 ... This site can’t be reached
[LG G8 Guides, News, & Discussion] netmsm:
Links are working.
[LG G8 Guides, News, & Discussion] jojo_00:
Hey! Did you manage to flash your phone? I too have lg g8x 901lg model number softbank ver. And I would like to update to a12 by flashing...so did you flash it? Did it work?
[LG G8 Guides, News, & Discussion] k.syedhussain:
Hello dudes I I have LG v60 Docomo version A51L in qfil mode I can t find OP_A and OP_B bin data file...is there any other name for Japanese version
[LG G8 Guides, News, & Discussion] dr.arest:
After erasing FTM, Modem_A, Modem_B, SID_A, SID_B, OP_A, OP_B partitions I tried to enter Download mode.

But the following message appears:

Also in fastboot mode thee device is not visible in fastboot devices output.

What do you advise me to do?