yashsingh1/xdaforums huggingface dataset:
[LG G8 Guides, News, & Discussion] dimex:
Thanks for talking with me through it. I could not find a single person anywhere who was dealing with the weird situation I was dealing with.

I read a few people who's model number changed after updating but mine was different. I received the unlocked model (G850QM), it was on Android 11, it showed being the unlocked model everywhere (within Android settings, on LG Bridge, on LGUP). but only at time of updating did it say it was the T-Mobile model.

Once backing up and erasing the partitions and flashing with LGUP, it then changed to the G850UM model. Once replacing the FTM partition with my backup it changed back to G850QM.

Really strange situation, but glad I solved it.
[LG G8 Guides, News, & Discussion] PHANX0M:
My stock one works. But thanks bro ( :
[LG G8 Guides, News, & Discussion] wilder666:
Ht @netmsm just want to know, can i follow this method to crossflash from LG G8 Korean to Open Canada? And will i get any error from doing this?
[LG G8 Guides, News, & Discussion] TPMJB:
Should be possible, just backup all your stuff first.
[LG G8 Guides, News, & Discussion] wilder666:
how about the camera? Korean model have 3 camera.
[LG G8 Guides, News, & Discussion] TPMJB:
There's GCams that have all three cameras. You'll have to do some searching to see which works best.

I mean just backup your stuff and try it out yourself. You're going to spend more time asking every single question you have instead of figuring it out with the resources in this thread (this thread answers every single question you have).
[LG G8 Guides, News, & Discussion] wilder666:
Okay thanks.. i will try.
[LG G8 Guides, News, & Discussion] TPMJB:
Make sure you CAREFULLY read the tutorial and backup everything you can. I skipped a few steps and did things wrong and added a good 24 hours to my journey, but on the bright side I know how to fix most things that go wrong now...lol
[LG G8 Guides, News, & Discussion] q-killer:
I did this as well! Make sure if you xflash, to then restore the original ftm, and maybe even modems if you want 5g. If you skip this step, there will be no serial number, and even more confusing.... you can't boot into recovery by holding vol- and pwr, it just skips right over it! This is very important for flashing roms (obviously), and was SUPER confusing to me as to why it wouldn't go into recovery because i thought why in the heck would I need ftm / modems NOW, I'm about to overwrite it with a rom, but NOPE you need to restore FTM at least and maybe modems for everything to work right. Lots of trial and error to figure that out
[LG G8 Guides, News, & Discussion] joaozin12xd:
I was on android 10 and updated to 12, but my serial number is gone, is it just me re-passing the FTM that I backed up? Wouldn't there be any conflict?
[LG G8 Guides, News, & Discussion] AsItLies:
No, there's no conflict. It's understandable to imagine there would be, but there are some partitions (ftm is one) that don't seem to change with the android version.

Restoring the original ftm will also give you access to fastboot and recovery by using the key combo's. Most don't realize ftm controls that, it was a shock to me, had no idea.

cheers
[LG G8 Guides, News, & Discussion] joaozin12xd:
After I restore, do I restart the phone just holding the power, or do I need some key combination for the phone to restart in the firmware?
[LG G8 Guides, News, & Discussion] Wish39:
@netmsm Hey what's up. I finally managed to flash LG K71 Android 12 firmware onto my Stylo 6. I had to first delete OP_a and OP_b in BROM mode, get the phone to download mode right after, then I had to use the "Board DL" option in LGUP to flash the kdz, or else it would not properly flash and the phone would get soft bricked.
[LG G8 Guides, News, & Discussion] AsItLies:
do nothing special, just restart the phone as normal.
[LG G8 Guides, News, & Discussion] netmsm:
Hey, thanks, what's up with you ^_^

Nice (y)

May I add this to the first page if you agree?
[LG G8 Guides, News, & Discussion] Wish39:
Yeah you can add it to the first post.

I've been busy lately so can't test out methods as much as I want to
[LG G8 Guides, News, & Discussion] jrdaguero98:
Hi bro, I have a question and I would be very grateful if you can help me.

I am crossflashing an LG V50 from Verizon to android12 V500em but I'm facing the drain battery issue. I read this an another comment you did to luffyacekun where you mentioned you first did a chip erase flash but when I tried to do this, LGUP told me that cannot flash from verizon to this other version. So, is there any first preparation I need to follow to proceed?
[LG G8 Guides, News, & Discussion] netmsm:
Hi bro =)

Yes, it is done via the instructions on this thread only.

REMEMBER, do not proceed without having backup of LUN5 partitions and FTM.
[LG G8 Guides, News, & Discussion] mhmmdalwi:
hey bro @netmsm thanks for the tutorial, i did everything you said and succes with the crossflash. Now i tried to write IMEI via PDM LGUP. I did it once and the results was failed, IMEI didnt change + i got nt code error. NT code error fixed after i restore the FTM. Can you help me wich methods should i try to write my IMEI?
[LG G8 Guides, News, & Discussion] rifay78:
Do you have a backup for lun5
[LG G8 Guides, News, & Discussion] mhmmdalwi:
i didnt. i only have a backup for FTM, Modem_A, Modem_B, SID_A, SID_B, OP_A, OP_B.
[LG G8 Guides, News, & Discussion] netmsm:
Hi =)

Make a backup of modem_a partitions.

Open it in UltraIso software.

Remove IMEIPRO files from it.

Restore it in place of modem_a and modem_b.

Then go for writing IMEI.

After that restore the backup modem_a.

edit: IMEIPROT is correct.
[LG G8 Guides, News, & Discussion] mhmmdalwi:
sure bro. Thanks for the guide. On process to try it. Btw, after restore it in place of moden_a and modem_b. I can proceed write IMEI via LGUP right?

or i can write IMEI through dial *#546368#*820# ?
[LG G8 Guides, News, & Discussion] netmsm:
Give it a try but I suggest to do it in PDM mode in which MEID and ESN will also be computed and written automatically.
[LG G8 Guides, News, & Discussion] mhmmdalwi:
umm sorry sir i'm still confused about PDM mode. Forgive me. Do i only need to restore PM attached to FTM, then close the Partition Manager?
[LG G8 Guides, News, & Discussion] netmsm:
Yeah, just restore the PDM file in place of FTM and restart the phone. For getting back to OS restore the original FTM.
[LG G8 Guides, News, & Discussion] KheniKheni:
Ok, so far, so good! I checked everything except SAID_A and SID_B. But I end up with the attached error # 13%. What to do next please? Many thanks in advance.
[LG G8 Guides, News, & Discussion] KheniKheni:
Initially you had LGUP set to Refurbish and then later I see the images change to Partition DL. But in the instructions, you did mention to select Partition DL. Please am I doing something wrong?
[LG G8 Guides, News, & Discussion] netmsm:
I haven't seen such error! You may better try another KDZ, I guess.

Don't bother with measly details in pictures instead follow the explicit instructions.

In flashing section you should choose partition dl and uncheck sid_a and sid_b.

That error does not relate to crossflashing.
[LG G8 Guides, News, & Discussion] KheniKheni:
Sure, unchecked sid_a and sid_b but still ending up with this error
[LG G8 Guides, News, & Discussion] netmsm:
It does not relate to crossflashing process. Redo or try another KDZ.
[LG G8 Guides, News, & Discussion] KheniKheni:
Oh ok. Please can you any reliable kdz links for the V50? Andorid 9, 10, 11 doesn't really matter now. Best regards
[LG G8 Guides, News, & Discussion] netmsm:
Here you can get any KDZ.
[LG G8 Guides, News, & Discussion] KheniKheni:
Wow! You've been so helpful. Thank you very much
[LG G8 Guides, News, & Discussion] micallan_17:
Hi, I’ve been trying to do this with an At&T Stylo 5 with a snapdragon 450 but am unable to find the firehose for this device, has anyone been able to crossflash this one?
[LG G8 Guides, News, & Discussion] rrhhuutt:
I xflashed my unlocked LG V50 Sprint to Open_EU android 12 and also got permanently locked. After I flashed everything back to the original Sprint backups, the phone still got locked. I suspect the lock info stores somewhere else, not in modemst or ftm.
[LG G8 Guides, News, & Discussion] netmsm:
The IMPL lock, network lock and also bootloader status are not put in such places but must have a relation with them anyway you're in need of Octopus box to remove the IMPL lock via repair IMEI or direct unlock.
[LG G8 Guides, News, & Discussion] jrdaguero98:
Hi, I haven't done it yet but I noticed that my battery drain issue is related to mobile network because when I leave the phone on standby overnight it loses about 20-25%. So when I turn on airplane mode and then turn WiFi back on and just leave mobile network off, the battery only loses about 2-3% throughout the night.

Did you have the same problem? And do you think doing the chip erase will help me? Or any advice you can give me?

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

Not even sure if that method might work for you. There was a guy who had solved the problem via a different approach. You can find his/her post on this thread. Search for keywords like battery drain, v50, and so on.
[LG G8 Guides, News, & Discussion] jrdaguero98:
Oh well, no problem, I got another phone that I'm going to use as my main and this v50 I will use it as multimedia and with some games.

Maybe in the future I will try to solve this problem but anyway I really appreciate your time and help=)
[LG G8 Guides, News, & Discussion] netmsm:
You're welcome bro ^_^

It's worthwhile to give it a shot. Make a backup of LUN5 partitions and FTM then go for a chip erase.
[LG G8 Guides, News, & Discussion] rrhhuutt:
Actually my IMPL is unlocked because I saw that IMPL=1 in hidden menu. Anyway, it is not bad to use the phone as a mini tablet.
[LG G8 Guides, News, & Discussion] KheniKheni:
Hi, will the backups be reused in any part of the process or is it for emergency restoration? Regards
[LG G8 Guides, News, & Discussion] netmsm:
Hi =)

FTM maybe used again for many reasons.
[LG G8 Guides, News, & Discussion] KheniKheni:
Ok great, many thanks
[LG G8 Guides, News, & Discussion] KheniKheni:
Hi, here's an update: So I tried another kdz with some 'success'. The phone boots up alright into the initial setup screens now. BUT, I have no signal either to the mobile network (sim) or wireless internet. Can't get past the setup screen
[LG G8 Guides, News, & Discussion] netmsm:
Hi =)

Eject sim and proceed.

If it has FRP lock you need to remove it using fh_loader by overriding LUN6 contents.
[LG G8 Guides, News, & Discussion] KheniKheni:
Tried the sim eject already; can you please guide me with the fh loader method? I don't even know what FRP lock is. Many thanks in advance
[LG G8 Guides, News, & Discussion] netmsm:
What do you get in setup screen that bars you? Does it need Google account authentication?
[LG G8 Guides, News, & Discussion] KheniKheni:
At the set internet connection screen, everything is greyed out; cant get past this screen
[LG G8 Guides, News, & Discussion] netmsm:
It's weird but it does not relate to FRP lock. You may better try another KDZ.
[LG G8 Guides, News, & Discussion] KheniKheni:
Sure, I'll do that and update. Many thanks Sir
[LG G8 Guides, News, & Discussion] mhmmdalwi:
sir, i followed the method's point 16 to write imei. but my imei remain still? is there another way to write my imei?
[LG G8 Guides, News, & Discussion] netmsm:
Is your IMEI lost? Is it zero or null? If yes, go to Qfil and 1. make backup of modemst1 and modemst2 then erase both of them. Restart the phone and check the IMEI. If it's not restored then follow the instructions to write IMEI, now it'll write it.
[LG G8 Guides, News, & Discussion] KheniKheni:
Hello, I'm back again. I flashed another kdz successfully BUT. . . . still no network at all (SIM, Wireless, Bluetooth. Tried restoring my original FTM backup but to no avail. I also have the NT 62 error when I start up ("Current version is not available for user. Can't find matched carrier. Check NT-Code: FFFFFF : 62"). Never done this before; all the help is highly appreciated. Best regards
[LG G8 Guides, News, & Discussion] KheniKheni:
Interesting; but in my case, I have no network at all
[LG G8 Guides, News, & Discussion] netmsm:
Dial *#06# and see if the proper IMEI is shown. If not, restore LUN5 partitions.
[LG G8 Guides, News, & Discussion] KheniKheni:
Ok, how to do this? I have the LUNS already. The IMEI is not legit
[LG G8 Guides, News, & Discussion] netmsm:
How did you make the backup, each partition separately or the whole LUN5 in one file?
[LG G8 Guides, News, & Discussion] KheniKheni:
Individually. I downloaded the LUNS for the V50 as posted (by you I believe), elsewhere in the chats
[LG G8 Guides, News, & Discussion] netmsm:
Go to Qfil > partition manager. There you can load data (restore) into selected partitions (See the instructions, Part B, #1.2).
[LG G8 Guides, News, & Discussion] KheniKheni:
Gracias! off I go
[LG G8 Guides, News, & Discussion] KheniKheni:
Hey Sir, you're a great guy! Many thanks for your patience and kind assistance. Phone is rocking now!
[LG G8 Guides, News, & Discussion] netmsm:
Glad to hear that,

Have a good day/night ^_^
[LG G8 Guides, News, & Discussion] micallan_17:
update, i manage to get the stylo 5 on EDL mode but Partition manager just gets stuck on error

Managed to get the Stylo 5 on EDL mode via test point but seems i don't have the correct SDM450 firehose file and gets stuck on the below error
[LG G8 Guides, News, & Discussion] AsItLies:
I'm unaware of that firehose being available or not, but you might want to look at bkerler edl utilities, I know in the iso he created (to boot linux with all dependencies he needs resolved) has some of the firehose included, not sure which ones though sorry.
[LG G8 Guides, News, & Discussion] micallan_17:
Thanks, I’ll try in the morning the above, i really want to remove that ATT rom since the phone is stuck on android 9.
[LG G8 Guides, News, & Discussion] debianmain1:
OK---I got another G8--branded ATT phone & it OTA'd to Android 12---which grayed out WiFi calling & "nuked" the regular calling. Question is---do I need to unlock it before putting the US_Open rom on it?
[LG G8 Guides, News, & Discussion] AsItLies:
all depends on what you mean by "do I need to unlock it"???

unlock the bootloader? No

unlock the sim? Yes
[LG G8 Guides, News, & Discussion] Xdekker:
Okay here is my issue, I have the Korean Variant (from carrier : ''KT'') Latest Android 12. The phone is running well and I have OK reception but it is not that good and I can not get CA/4G+ working for the life of me.

Here is my issue and some questions, if there is any smart soul out there with some answers it would be amazing:

1. if Korea decides to censor the internet will my device be affected

2. Since the LG G8 Never came out in Europe, what should I flash to? I am using Vodafone Network in Netherlands right now and to be honest it's not the best, I know the modem can handle all the bands and support everything for 4G+ but the phone just refuses to do anything, in the engineering menu the option to enable CA is just not there at all, getting to that menu alone is a pain in the butt and almost no one seemed to know how to do it! I had to figure it out on my own it took hours!

3. The phone has some weird korean stuff that I just cannot get rid of, such as always displaying the time of Korea and when you're at the wifi screen there is no option to rid the annoying KT ad's basially.

What should I do, I am kinda lost, I love the phone but the questionable reception that is literally all due to the phone being locked in a way to not do any kind of CA here is so sad.

My main issue is, I actually think flashing a US rom will make things even worse, I don't wanna ruin this phone neither, it has the latest android 12 on it OTA and not a lot of phones got that, I know why now, from what I know it's all because KT Basically is paying for it with their ads in the phone to their website.

What should I do guys I am lost, please also check out:

https://xdaforums.com/t/i-give-up-c...-kt-please-help-me-lol.4506203/#post-87580253
[LG G8 Guides, News, & Discussion] debianmain1:
That's what I need to know---I can use a reseller SIM (Consumer Cellular) with the phone right now (well, at least when the phone was on 10)...So I would "guess" that the SIM is unlocked? I know that the bootloader is still locked.
[LG G8 Guides, News, & Discussion] AsItLies:
Well because consumer cellular uses both at&t and t-mo networks, I'd probably want to verify the sim is actually unlocked first. I'd guess consumer cellular would work (with at&t network) even with locked at&t phone?

I'd get a sim like mint mobile, that only uses t-mo network, if it works with something like that, then it's def sim unlocked.

There are prob others you could use to verify it also. The mint one I use, it's great. Pretty sure you can get like a very cheap or even free trail sim from them, that would work for a few days.

If the sim is locked, that's a whole diff problem. If at&t won't unlock it, you would need to look for one of these remote unlock services. It's quite a process to get it done, not for the faint of heart.

good luck
[LG G8 Guides, News, & Discussion] debianmain1:
OK--I checked & it is locked....so it looks like an unlock is needed before anything else......
[LG G8 Guides, News, & Discussion] AsItLies:
Yes, don't do anything until that is unlocked! It's a nightmare to deal with if u don't use their rom and get them to help u get it unlocked.
[LG G8 Guides, News, & Discussion] debianmain1:
Thank You----Ya, & it's ATT, so it's the worst ROM of the bunch.......
[LG G8 Guides, News, & Discussion] Lazbluerus17:
Can I have the full system dumps for k31 rebel please
[LG G8 Guides, News, & Discussion] rrhhuutt:
The 'permanent lock' actually doesn't affect the use of the phone. I can connect to TMO's 5G network occasionally. The problem is that TMO frequently kicks the phone out of their network, the same happens to ATT. Therefore, even cross-flashed, V50 Sprint won't get call services in USA.
[LG G8 Guides, News, & Discussion] Lazbluerus17:
I need system dumps for LG k31 rebel
[LG G8 Guides, News, & Discussion] Roma-G:
Is there any Clear instructuin how to get back missing Serial Number? - (after flashing ATT LG G8 S/N is unfortunately missing)
[LG G8 Guides, News, & Discussion] AsItLies:
Flash the original FTM partition back using qfil.
[LG G8 Guides, News, & Discussion] Khmer_Boy:
Hello! I’m pretty new to this crossflashing and I was wondering if you can help explain about Lun5 partitions? Where to extract that?
[LG G8 Guides, News, & Discussion] netmsm:
Hi =)

LUN5 contains modemst1, modemst2, fsg and fsc.
[LG G8 Guides, News, & Discussion] Khmer_Boy:
Thank you!
[LG G8 Guides, News, & Discussion] micallan_17:
quick update on the ATT Stylo 5+ i was able to flash the open firmware using a CMD version of DEV LGUP but now the device is stuck on displayinig OPID Mismatch, no way to go back to the ATT ROM since it's not available, and since no firehose for the SDM 450 on the Stylo has been found, am not sure what else i can try to get it back. will see what else i can do with it
[LG G8 Guides, News, & Discussion] nortnil:
I cross flashed from the unlocked 820QM firmware to the Verizon variant and it worked and allowed me to get wifi calling on their network, but I hated the software and flashed back to a fresh install instead of flashing from my backups. Then I messed around in the hidden menu trying to get wifi calling settings to work again.

Which partitions should I reflash to ensure all of the modem/network settings I may have changed in the hidden menu are back to stock settings?
[LG G8 Guides, News, & Discussion] arksid:
Hi, i recently flashed my lg 830um with android 11 from at&t's android 9, but now the bottom speaker doesn't work only the one under the screen works. Is there anything i did wrong or i need to add or change?
[LG G8 Guides, News, & Discussion] RigobertoEHA1:
brothers, can help me i have this phone

model: LMV450PM region: SPR

when i try to install "V500EM40b_00_OPEN_EEA_OP_0517.kdz" i have this error:

Error: 0x6004, CrossDL flashlm_lao_com>@flashlmdd Target_productchanged.

but its done if i try this "V450VM40a_00_VZW_US_OP_0524.kdz"

i dont want this system of verizion, i need the global kdz please
[LG G8 Guides, News, & Discussion] garyww39:
hi im trying your tutorial on my g8x when i open qfil only time i see storage option is when meta build is selected and even then i cant change the build if i switch it to flat build the storage selection disappears
[LG G8 Guides, News, & Discussion] garyww39:
i also have a lg g8x demo board it powers up and displays a android operating system but i was told it cant be used with any cell service but not sure if it can be messed with or its just trash also was told on the demo version the 128gb storage is not true its much smaller
[LG G8 Guides, News, & Discussion] bexiu:
I follow your way dowgrade my lg g8 thinkQ G G820UM20S to it's original android 9 pie, but at step C, I forgot check SID_A, SID_B, got error OPID mismatch, I redo again step B, erease but when enter download mode, nothing show info of phone, only text "download mode". Now, LGUP also can't read mode & port. What should I do? thanks bro
[LG G8 Guides, News, & Discussion] netmsm:
That's true.
[LG G8 Guides, News, & Discussion] netmsm:
That's weird !_!

Are you sure "laf_a" and "laf_b" partitions are intact? Try to restore them.

For the second attempt, restore your backups of other partitions.
[LG G8 Guides, News, & Discussion] bexiu:
I saved

[ fsc_backup.bin

fsg_backup.bin

ftm_backup.bin

misc.bin

modemst1_backup.bin

modemst2_backup.bin

modem_A

modem_B

"SID_A,SID_B"

OP_A

OP_B ]

but not save "laf_a" and "laf_b"
[LG G8 Guides, News, & Discussion] netmsm:
Give me a screenshot of the phone download mode.
[LG G8 Guides, News, & Discussion] kt-Froggy:
First off, big THANKS to the OP (netmsm) and other people who contributed to this thread and made this guide very clear and useful!

So, after perusing this thread for a long time, trying to understand the ins and outs of the process and any possible snafus, I decided to take the plunge after the Open_CA A12 (40a) got released recently, and to flash it onto my G8 originally from US Cellular. The crossflash went smoothly with no issues at all. A nice surprise was that the BL remained unlocked - I was prepared to go through the whole unlocking process again before rooting, but didn't have to. I got the empty S/N (easy fix), and the infamous NT-Code error. This is where I got stuck for a while. I tried fixing it by editing the cust_path_mapping.cfg file as suggested in the thread. The problem is that I couldn't save the changes in that stupid file by using ANY root explorer/editor! :mad: Tried half a dozen different apps with no luck at all. BTW, anyone has any ideas what I may have been doing wrong?? Yes, I am properly rooted with Magisk.

Anyway... Everything worked fine on the phone, but that lame error was really getting under my skin - I could have ignored it, but I hated not being able to get rid of it. So... After more reading, I came across some info on hex-editing the FTM partition (in a totally unrelated topic). The NT-Code in FTM binary is stored at the offset 00014000. My error message was referring to the code "FFFFFF,85". The original cust_path_mapping.cfg file (which I couldn't edit) had a line referring to "FFFFFF,82". So, having all backups available, I decided, just for the heck of it, to change the last digits of the NT-Code in the FTM partition to match the "82" listed in the file. What could go wrong? I can always restore a backup... After flashing the edited FTM in QFIL, rebooted the phone, and - bingo! The NT-Code error was gone, and the phone was still fully functional. This was my happy face after spending a good hour and a half trying to get rid of it, and finally succeeding: 😁

Cheers, and thanks again for all the info!
[LG G8 Guides, News, & Discussion] tofik33`:
Hi. Can you please send a link to the tutorial how to edit the FTM partition?