yashsingh1/xdaforums huggingface dataset:
[LG G8 Guides, News, & Discussion] Honeytea:
No, it seems looking good. In the hidden menu / device test / motions sensor test looks good.

Or can I try something special for you on this topic?

( im from V500N20b SKT to V500EM40b_00_OPEN_EU)
[LG G8 Guides, News, & Discussion] Honeytea:
Did you find a solution to avoid this warning message?
[LG G8 Guides, News, & Discussion] slashduff:
Before

After

For some reason, deleting the seven partitions didn't delete the download mode ID. It's still 3(SPR_US)
[LG G8 Guides, News, & Discussion] netmsm:
It's weird!

Try erasing these on both sides a and b: vendor, product, system and boot in addition to erasing ftm, modem, sid and op on both sides a and b one more time.

Before erasing create backup.

Consider that the phone should immediately get into "Download Mode" after restarting from EDL so quickly release Vol- and Power and press Vol+ after restart.
[LG G8 Guides, News, & Discussion] nedthehead:
I am looking to try this tonight. I have an LGM850UM with the AT&T firmware that I'm looking to bring over to the Canadian firmware. I have two questions:

Is the LGE SM8150 Firehose safe to use with my model of G8X?

I assume this link is for the Canadian Version of Android 11 that was released recently. Would this be the correct KMZ to use for my phone?

Fourth of July 2024

Happy Fourth of July, United States! #GoogleDoodle

lg-roms.com

Thanks!
[LG G8 Guides, News, & Discussion] cooledi:
this guide doesn't work anymore for you?

https://xdaforums.com/t/guide-no-ro...ther-qualcomm-powered-lg-devices-too.4343655/
[LG G8 Guides, News, & Discussion] asusm930:
is there a way to use LGUP to flash the whole ROM excluding the OP parititions? Thinking of doing a OPEN_EU ROM phone with the Korean U+ OP
[LG G8 Guides, News, & Discussion] netmsm:
Do as this thread says for how to flash all partitions except SIDs. I don't know what will happen after doing this, however you can just give it a try and it'd be good if you then inform us of the result =)
[LG G8 Guides, News, & Discussion] truongtoan1994:
It's work on my spirnt g8x android 10 , now i can covert to g8x CAN ver . Tks so much. Buti lost my SN number.
[LG G8 Guides, News, & Discussion] AsItLies:
that's pretty easy to get back, assuming u have it written down or u have the original ftm partition.

I got mine back by restoring the original ftm partition. Another way would be to take the ftm partition on there now (if u didn't back it up), and use a hex editor to put the s/n in it at offset position 12000. Save it and flash it back.

It's not critical, it doesn't really affect anything not being there, but it's kind of 'nice to have' it show up.

cheers
[LG G8 Guides, News, & Discussion] cooledi:
Thanks netmsm/asltlies for this guide/help, I did manage to flash a um ->qm (wanna try Amazon)

Now i have few questions, thanks for answering in advanced.

1. I bought g8 from tb web, the imei is zero, seller gave me a legit one back. How do I flash imei back to the phone? Is there a offset file like serial no.?

2. If I want to go back to original um kdz, do I have to redo the guide again to be safe? (Obviously I don't need to backup as I've already the partitions)

3. The guide say backup and erase 5 partitions, but the list have 7. I bk & erased all 7, shouldn't affect anything, right?

4. Is it possible to flash a10 kor n rom, then ota to a11? IF that's possible, is it impossible to get back to a10 rom?

Thx
[LG G8 Guides, News, & Discussion] netmsm:
IMEI can be repaired using Octopus box only which costs some credits. When IMEI is 0 it means that modemst1 and modemst2 and fsg are gone. These partitions contain the new LG lock that allows modem partition to detect sim. Without the lock I'm not sure that IMEI repair can be successful.

However, sometime data in modemst1 and modemst2 may corrupt resulting in IMEI null or 0. In this case it is suggested to backup modemst1, modemst2 and fsg then erase modemst1 and modemst2 only. If the problem is data corruption then the original data will be restored from fsg automatically.

If you have the original KDZ it is not necessary to create a backup.

That 5 was a typographical garble =) 7 is correct.

I didn't try it yet but there should be no problem.

It's possible to roll back to a10.
[LG G8 Guides, News, & Discussion] cooledi:
I've just tried erasing the modemst1&2 without success, so probably not data corruption... But the phone still works 100% and detecting sim OK.

Also, is there a way to tell if my g8 is a frankenstein phone? i.e. firmware come with um, but the hardware might not be, right?
[LG G8 Guides, News, & Discussion] netmsm:
So, try EFS Professional to write IMEI.

Check it with LG Bridge.
[LG G8 Guides, News, & Discussion] cooledi:
Yes, I will probably try vrz rom method code ##7764726710 to repair EFS in the future. But as the phone is working 100% with network, I will hold on until I have a problem with imei=0, thanks.

In LG bridge, the phone shows [msmnile] 633A B64 Official /E/L/RO/id: 0() and description is QM as it had been cross flash already, so I guessed I can't check real h/w of the phone?

Finally, which rom do you think is most versatile to flash for g8? I mean like one that has the most bandbase support, etc.?

thx
[LG G8 Guides, News, & Discussion] netmsm:
That code is for LG G7, the proper code for LG G8 is ##7764726820 to get into hidden menu where you can enable "port check test". It is not necessary to have VRZ rom rather you can enable "port check test" on other roms too but the code to get into hidden menu is different. On Open_CA try *#546368#*820# then go to "SVC menu" and find "port check test" option.

Does it mean that your phone is crazy? How is this possible to have network with IMEI=0?! Did I miss something?!

Try flashing all partitions. Do not uncheck SID partitions. If it persists, then I guess you lost "device id". Also you can check "device id" using "tutty" - attached file. Select "Serial" in "Protocol" and choose the proper port number in "port". You can find the correct port number in device manager under "modem". Then hit "open" and a terminal window will be appeared. Type "at" and hit enter you should get "OK", it for testing if it works. You should get a 65 character string for the command "at%deviceid=?" and a 17 character one for "at%info=?". Here you can write your IMEI too with the command "at%imei='your IMEI number'".

Note: To get "tutty" to work, the "port check test" needs to be enabled.

Sorry, I don't know. I'm in Persia where there isn't much in the way of different vast bands and so I was never after band support things.
[LG G8 Guides, News, & Discussion] AsItLies:
The rom with the most bands would be us open, but it's at a10 and may not ever be updated to a11 (if that matters to you).

How did u lose imei? if it was the result of crossflashing, then, in the past anyway, people have had success seeing it again in settings by adding the imei to the ftm partition (I believe it goes at position 0000d000).

cheers
[LG G8 Guides, News, & Discussion] elaz2b:
I would like to know the following:

(1) first, MAKE A FULL BACKUP OF ALL PARTITIONS; and I mean it!!! How, exactly, does one make this full backup? How does it get restored if needed?

(2) 1. Make a backup of and erase these 5 partitions: FTM, Modem_A, Modem_B, SID_A, SID_B, OP_A, OP_B. What does this mean, exactly? What tool is being used for this?

(3)If you are in Spring or other platforms you will get the message whether to change the model or not. Of course you know what to do =). I do not know what to do. It is not helpful to write such a vague, obtuse instruction.
[LG G8 Guides, News, & Discussion] AsItLies:
I don't speak for netmsm, and he's more than capable of doing that himself.

But, for myself, I just wanted to say I think your comments are very unfair. 1st) The guide does say exactly how to back up those partitions, you, obviously, just don't recognize that, and probably thus have no idea what the utilities mentioned in the guide do. (hint: see where qualcomm and qfil are mentioned - just before 'make a backup'.

2nd) If u don't understand something in the guide, read the comments others have made, because it's possible someone else has already asked that question. Re the 'Of course u know what to do', you'll find others have said they got that pop-up, and others didn't. From that u can deduce, it's not **critical**. And, if anything, u realize it's kind of a joke... as in 'who want's a sprint phone anyway?' Get it?

There's no reason to be disparaging because u can't follow a guide without having to do any thinking at all. Sometimes, a guide can be 'over our head'. I.E. u just don't have enough experience in this area. Remember, a guide writer faces a dilemma; how to get the information across, succinctly, without becoming too verbose. Too verbose and the guide becomes a book, and most of us that write guides have no desire to spend the time it takes to write a book.

If u don't understand, ask questions, but don't be disparaging. We should all be thankful netmsm even bothered to take the time to write this!

cheers
[LG G8 Guides, News, & Discussion] netmsm:
So, just ignore it! But if you really need help I suggest to read the guide line by line patiently and meticulously.
[LG G8 Guides, News, & Discussion] netmsm:
Thanks friend 🙏👍

I've benefited from XDA's guides, tools, etc. and I've been always thankful for all their benevolence. I feel obliged to share what I know with others here. This is the manner I was taught in this forum.
[LG G8 Guides, News, & Discussion] cooledi:
V50 A11 just out, so us open will be soon too? why do u think there won't be any a11 for USA/ca?

na, I didn't lose imei, it was sold to me with imei=0 , seller did gave me a unique um one back though, that's why I want to try to write it back. Will rooting the phone make it more easy to write imei?
[LG G8 Guides, News, & Discussion] tofik33`:
No. I guess it can't be done when bootloader is locked.

And my proximity sensor is working good. It healed itself in some magic way.
[LG G8 Guides, News, & Discussion] r33tom:
Just want to say a big thanks to @netmsm your guide has saved me from replacing my LG g8x sprint version. I was stuck on android 10 and security updates from a year ago. Now on android 12 with a recent security update. This has given my phone another year of service before I'll replace it.

The guide was easy to follow and I didn't encounter any issues. Device is like new again.
[LG G8 Guides, News, & Discussion] Wish39:
@netmsm Hey whats up, long time no see. We talked some months ago when I was trying to crossflash a Mediatek powered LG K51.

Well I finally figured out how to crossflash on LG Mediatek devices. You get the phone into BROM mode and just erase both OP_a and OP_b partitions, and LGUP will let you flash any firmware you want. I successfully flashed Korean LG Q31 Android 11 firmware onto a Spectrum Mobile LG K31 that had Android 10.

It's still risky to crossflash because I then hard bricked a Spectrum LG Stylo 6 by trying to crossflash it to LG K71 Android 12 firmware. Something somehow went wrong and I had to use SP flash tool to unbrick it.
[LG G8 Guides, News, & Discussion] netmsm:
Heyyy

Not much, thanks.

Yeah I remember that, so how have you been.

Great job, so we got Mediatek devices unlocked to be crossflashed. Nice.

LG Stylo 6 and LG K71 have minor differences, maybe this is the reason that it had been bricked.

I've never worked on Mediatek devices, but if we can create a full backup then it makes us able to use the backup file and unbrick the phone like what we do on Qualcomm devices.

I'll mention your guide and pin this post to the first page for those who are willing to crossflash their Mediatek devices if you find it good and have no problem with that.
[LG G8 Guides, News, & Discussion] TPMJB:
Hey @netmsm is there an easy way to backup all partitions or do I have to do them one-by-one? Because that seems like a royal pain lol.

I'm getting another one of these phones so curious for the future. I didn't do this for my US Cellular LG V50 (I'm probably the only one with a V50 US Cellular woooo)
[LG G8 Guides, News, & Discussion] netmsm:
Hey =)

Did you check this?
[LG G8 Guides, News, & Discussion] Yeison888:
ayuda tengo v50 sprint eliminé todas mis particiones incluyendo ftm ahora no tengo imei me dijo que mi teléfono está permanentemente bloqueado hice una copia de seguridad de ftm pero cuando restauro la partición me da imai pero no hay señal
[LG G8 Guides, News, & Discussion] Brando81:
OK, I think I read everything and not sure if I did something incorrectly.

Backedup my partitions and deleted the partitions as indicated. When I did part B 3.1, it took me to FastBoot w/ PowerOff or Restart Options. Somewhere else in the thread was talking about having to restore Download, but I'm not sure they were at the same point I was. LGUP shows no handset connected.

LM-G850UM

Secure Boot yes

Device State locked

Can anyone help with the next few steps?

Thanks in advance!
[LG G8 Guides, News, & Discussion] AsItLies:
So if you're trying to unlock the boot loader, then at that fastboot screen just type in 'fastboot oem unlock'.

If you want to restore download mode, you just need to flash back the backed up laf partition.

It's a little confusing because there are 2 ways to get fastboot, one is the obvious flashing of the engineering abl. The other is to delete the laf partition, and instead of getting lgup / download mode when going to lgup, you get a 'watered down' version of fastboot.

cheers
[LG G8 Guides, News, & Discussion] Brando81:
Thanks for the comments!

I don't think I need to unlock my bootloader. I have AT&T model on TMO network which just became useless due to no VOLTE. I'm trying to update this for the model/IMEI to hopefully work and add VOLTE (Here https://xdaforums.com/t/guide-no-ro...ther-qualcomm-powered-lg-devices-too.4343655/)

I have flashed other models in the past, but this is my first time messing with the G8X.

I don't think I deleted the laf partition, but that seems more likely than flashing abl. I was following this:

1. Make a backup of and erase these 7 partitions: FTM, Modem_A, Modem_B, SID_A, SID_B, OP_A, OP_B.

1.1. You have to left-click on a partition then right-click on it and select "Manage Partition Data".

1.2. In the pop-up window, you have 4 choices: I. Erase (to erase data on the partition), II. Read Data (to dump or back up the partition), III. Load Image (to restore the partition), IV. Close (to close the window).

1.3. First dump/back up the partition by choosing "Read Data" then Erase it.

2. Close the "Partition Manager" window.

3. Wait for 5 seconds then press Vol- and Power until it restart.

3.1. Immediately after rebooting, Release the Vol- and Power buttons and press Vol+ to get into Download Mode.

Note: Do not let the phone to begin to boot! If it begins to boot, it may regenerate the SID and FTM partitions data and so you need to redo the whole step B.

And at 3.1 is where I went into fastboot instead of download.

So it sounds like I need to flash laf first. I imagine I do that going into QFIL and restoring my saved partition?

(Can I just Restart to get out of FastBoot?)
[LG G8 Guides, News, & Discussion] adieygdiey:
I got same problem last night..fastboot mode appear instead of download mode..i think g8x have different key for download mode..instead of volume up..i press volume down..in fastboot just select restart and hold vol-..just make sure dont boot your phone 1st..otherwise u need to do the step again..my device was lg850um sprint glashed to lg850ewm..only nt code issue but everything work fine
[LG G8 Guides, News, & Discussion] adieygdiey:
I'm on firmware g850ewm40a A12..flashed it from g850um sprint A10..do i need to follow the step again to downgrade android A12 to A11..i mean from A12 g850ewm40a rom to A11 g850ewm30g..my goal is to fixed volte on this device..just realised A12 cant do that
[LG G8 Guides, News, & Discussion] Brando81:
So I rebooted from Fastboot, but seems I'm stuck in a loop. Everything goes straight to Fastboot:

Volume +

Volume -

and doing nothing.

***Edit*** I kept restarting and trying volume +. Somehow it went into download and I could finish the other steps. It's reflashed, but it didn't ask about changing models so I have the same model listed but no AT&T Boot screen, so we will see if I can fix that. Just wanted to update in case anyone is reading this later in a similar situation.
[LG G8 Guides, News, & Discussion] deadly202:
Which kdz did you use to accomplish this? Send a link plz.
[LG G8 Guides, News, & Discussion] r33tom:
Download LG KDZ Firmware G850EMW40A_00 / POC of LG G8X ThinQ (LMG850EMW)

Download LG KDZ Firmware G850EMW40A_00 / POC of LG G8X ThinQ (LMG850EMW) for free and max speed from LGROM.com.

lgrom.com
[LG G8 Guides, News, & Discussion] deadly202:
Just finished, instructions seemed straightforward.

I didn't get a prompt to choose model also, I'm getting the "Check NT-Code" error on boot.
[LG G8 Guides, News, & Discussion] r33tom:
Yep I got that too. I read it does not cause any issues. You can remove the alert but your need root access. Have a search on the forum as there is a few threads on how you can fix this.
[LG G8 Guides, News, & Discussion] adieygdiey:
Same here..do you also lose your serial nunber? Mine doesnt show up..i hope it wont cause any issue
[LG G8 Guides, News, & Discussion] r33tom:
Yep same but I would say that would be used for warranty purposes. IMEI is the important part. I have been using it for a week now and it's been fine. Haven't noticed any issues.
[LG G8 Guides, News, & Discussion] AsItLies:
Yeah the serial number isn't a big deal, but if you restore your original ftm you'll see it again. Also though, you need to restore the original ftm to have access using key combo to recovery and fastboot. That usually comes as a surprise to most.
[LG G8 Guides, News, & Discussion] r33tom:
That may be worth doing than. Will it cause any issues by flashing the backed up FTM?
[LG G8 Guides, News, & Discussion] AsItLies:
No, no issues at all. Save off the one that's there now, just in case. But in my experience, works perfect flashing the original, get serial back and the other functionality.
[LG G8 Guides, News, & Discussion] r33tom:
Thanks I'll give that a go
[LG G8 Guides, News, & Discussion] cbmboy:
Okay - I'm looking for a little experience from those before me. I have a G8X, model G850UM (Sprint). I previously unlocked the boot-loader, network, and rooted it. Today I followed the instructions and everything worked - except I didn't get the prompt to change the model number. Also after the restart, I got the network code error, which I am thinking is related.

So my question - anyone know why the change model prompt didn't come up?

Again, I am on the G850UM, and was trying to cross-flash to G850QM (correct me if this is the wrong path).

The KDZ I used was `G850QM30b_00_NAO_US_OP_0902.kdz` (the USA region) from https://lg-firmwares.com/lg-lmg850qm-firmwares/. I am downloading the same file with the CCA region to see if that changes anything.

I tried multiple times - including erasing the system a/b, vendor a/b, boot a/b, and product a/b along with the "normal" ones from the original post.

So - any ideas?

i am downloading a different KDZ from that page to see if it just happens to be that the one I picked wasn't actually a QM but a UM... but I am not well versed, so any and all help is appreciated!

Thanks!

DeadEnd
[LG G8 Guides, News, & Discussion] AsItLies:
Hmmm, no, the 'change model' isn't related to the network error code. At least not in my experience.

the network error code, if you mean the start up message 'nt code not found' etc, doesn't affect the device working. Many people just ignore it as it only shows up when booting.

There are ways to fix it, search this thread and you'll find them, if you want to go to the trouble. And no, if the kdz you downloaded said it was a QM, then it's a QM... not something else by mistake.

cheers
[LG G8 Guides, News, & Discussion] cbmboy:
Thank you for the reply.

I'm happy just ignoring the network error.

Initially I was thinking I should flash a QM firmware to cross-flash it to an unlocked variant... but perhaps I am not understanding correctly. If there is a write up explaining this I missed it - sorry for that!

I'm wondering if I am misunderstanding and have wrong expectations. Since my model is the UM - can I flash a QM to change it - or should I just be flashing UM firmware and using one that is for "OPEN_ CA" or "OPEN_US"?

DeadEnd
[LG G8 Guides, News, & Discussion] AsItLies:
I've never had a G8x model, so not sure on the firmware for it. But I'd say def go with the OPEN_xx as it shouldn't have any carrier bloat and have all the needed bands for that region.

might want to do more research re UM v QM for that variant. For the normal G8, the qm means 'open', it may not with g8x.
[LG G8 Guides, News, & Discussion] cbmboy:
From what I read when researching it, the UM models are the Sprint/ATT branded models. The QM are the non-carrier variants in the US. That being said, I see some files for the UM variant that have "OPEN_CA" in the file name... so I am confused :confused: .

Side question... after cross-flashing (if I do it to the correct firmware) should OTA work? I wasn't sure if changing firmware would "fix" this or not (since the Sprint/T-Mobile dropped it).

Thank you for all the help!

DeadEnd
[LG G8 Guides, News, & Discussion] AsItLies:
Well, my understanding is the UM and QM hardware is identical, so which variant you flash is only relevant to what bands you need. No, the ota won't work, but at this point, I don't think there will ever be another ota.

pretty sure the diff firmware you're seeing is the result of: when these phones are sold, they are either carrier locked or not. The 'open' versions are not carrier locked, even though it looks like they are sold by individual carriers. The QM variants seem to be appropriate for multiple carriers, but still be 'open' versions (no carrier bloatware).

I think you'll find flashing an 'open' version, with the bands you need, you'll be all set.
[LG G8 Guides, News, & Discussion] TPMJB:
I did not! Thanks!
[LG G8 Guides, News, & Discussion] TPMJB:
Just ignore me. I'm an idiot and forgot to change from emmc to ufs in QFIL.
[LG G8 Guides, News, & Discussion] cbmboy:
So... I tried another firmware form that site that was G850UM and it was no different... still no prompt to change to OPEN_##. I guess I did something wrong.. IDK. Just for full due diligence (because the second one I downloaded was "unknown" and since it was CAN region I assumed it was OPEN_CA) - I downloaded a third firmware that is absolutely listed as OPEN_CA. Still no prompt... so I give up on that part.

All three seemed to work, one was 20j, one was 30a, and the last was 30b (the QM one). I used hidden dial menu and looked at the bands listed (this might be completely irrelevant) and they were all the same. So I assume that all three would give me the same capability. That being said, I finally flashed the 30b as it is the newest firmware.

Finally I put my ftm partition back in to get my serial number back... now I'm looking at the custom boot images to get a fancy new kernel, and I think I'll stop trying to break this thing and just use it :cool: .

Thanks again for the help!

DeadEnd