yashsingh1/xdaforums huggingface dataset:
[LG G8 Guides, News, & Discussion] AsItLies:
which rom did he use? no idea. I would guess the Kor open one. The others are carrier specific, unless yer in korea don't want those...
[LG G8 Guides, News, & Discussion] netmsm:
It was the Korean Open rom and you can get it from here.
[LG G8 Guides, News, & Discussion] mangojain:
Due to carelessness i missed seeing the Open rom and had chosen the LGU rom. Downloading now, wil give it a try although frankly not hopeful. There must be something else that you unlocked on your phone which gives you the edit options. Anyway, if the Korean Open lets volte and vowifi work, maybe i can stay on it instead of having to flash the Canadian Open again.

Interesting that the Korean roms give you the option to not install some bloatware during setup . . .
[LG G8 Guides, News, & Discussion] brigantti:
Ok thank you i did downloaded now and in fact is 4gb.
[LG G8 Guides, News, & Discussion] mangojain:
OK, so I've flashed the Korean Open and the news is both good and bad.

The bad news is that the edit options still don't show up in the svc menu.

The good news is that volte, vowifi and email are working, so I can continue with this rom.

The camera is working fine after I edited cust.prop as you suggested.

And a very minor thing, but nice nevertheless, this rom gives you plenty of English language options. And, like I mentioned in my earlier post, the option to not install some bloatware.

Overall, I recommend the Open_KR to the Open_CA. The Open_US is a piece of ****.

I am not sure about this point, but I flashed disable-verity while flashing the patched magisk and I didn't need to flash twrp at all, the data was already decrypted and I could make changes in the root folder. So it was definitely an easier install, otherwise you have to go through the setup process again, after flashing dm-verity from twrp.
[LG G8 Guides, News, & Discussion] AsItLies:
Good you got everything going as you like.

Curious though, you have your non-korean G8 (with only 2 back cameras) working with the Kor open - which has 3 back cameras?

what exactly did u edit to what value? I tried using what netmsm suggested and it didn't work, sounds like I may have missed something.

also, why do you say the us open (a11) version is crap? I'm using that and have no issues at all... have twrp working with it, magisk etc. Vowifi and Volte work great, no nt code error, it's quite awesome really.

cheers
[LG G8 Guides, News, & Discussion] mangojain:
Well, I added just the values that he suggested and the camera seems to be working fine, but I will test all three tmrw and make sure.

Like I wrote earlier, vowifi and email didn't work on the US Open for me, the nt code error is common to all roms so that is not an issue. I live in India, and whatever rom I use, I change the target region and country to ESA in cust.prop and edit almost the files in /OP/config to match ESA settings.
[LG G8 Guides, News, & Discussion] orlandoblues:
Hi,

I think i bricked my phone.

IT's a spring G8 and i tried to install G820UM20j_00_USC_US_OP_0607.kdz. However, LGUP didnt give me the option to do "PARTITION DL" (i dont know why) and i did select refurbish. Now the phone does not boot (flashing LG) but goes in download mode. Is there any way i can fix it?

Thank you
[LG G8 Guides, News, & Discussion] netmsm:
Hi =]

Redo the whole steps but use another firmware. Make sure you're having preparations done to get partition dl on lgup.
[LG G8 Guides, News, & Discussion] orlandoblues:
So @netmsm i dont know what i did in QFIL last night :) it was late. I tried to upload data from the dump forcing overflow :/. Bottom line, now it does not go in dowload mode. The download screen appears (the initial window) but does not enter in the proper download mode. Do i have to throw it from the window or is there something i can do? :) thank you so much
[LG G8 Guides, News, & Discussion] netmsm:
Just share your location and tell me from which window you're gonna throw it out so maybe I'll catch it ;):D

I don't know which partitions are destroyed so you need to extract a KDZ (the one which is already flashed on the phoned) and restore the necessary partitions to get into download mode. You can find the list of those partitions here.

In case you know which partitions are destroyed so just restore them.
[LG G8 Guides, News, & Discussion] mangojain:
Just an aside, the TMO A11 G820TM30b_00_TMO_US_OP_1229.kdz is now listed on the lg-roms site and it shows 924 downloads, but the download page is throwing up an error currently.

Update - downloading with kdz downloader
[LG G8 Guides, News, & Discussion] EpyV:
Just a silly question, maybe, but I wanna ask, I do have G820UM AT&T version unlocked network (global so I can use Malaysian sim card), running on A10, and I wanna crossflash it to A10 OPEN_CA or US then A11, and the question is, will it wipe my personal data? Such as whatsapp picture etc? And how about you guys recommendation? Should I choose OPEN_CA or US? Cuz I really wanna upgrade from A10 to A11 since A10 is so laggy and drain my battery like there is no tomorrow. Sorry for my bad english and thank you for making this happen @netmsm .
[LG G8 Guides, News, & Discussion] mangojain:
The NT Code 0 issue is deeper .. I had tried various roms, us open, canadian open and Korean open, on my TMO phone, and I would always get the mcc/mnc error which could be fixed.

Now, when I have flashed my TMO phone with the TMO kdz, to my utter surprise it is throwing up the 0 error!

Both MID and cust_path_mapping show the correct (and matching) values, yet the error msg pops up. Does anyone have any ideas?
[LG G8 Guides, News, & Discussion] AsItLies:
This isn't any help, but my experience is also that the nt-error issues go pretty deep. I cross flashed my sprint device to us open a11, and tried to edit the value in the svc menu, didn't do it correctly and ended up with a 'no service', even though before edit everything worked but just nt-code error.

So I cross flashed it again, deleted all partitions possible first. Same problem, didn't fix the 'no service'! Had to use the bkerler complete backup of my original sprint firmware to get the 'no service' back to normal. Then cross flashed and edited cust_path and fixed the nt-code error that way.

If you don't have a complete backup, I'm not sure what you can do, sorry to say. There is a thread in guides about adding VOlte modem configurations that might help though.
[LG G8 Guides, News, & Discussion] netmsm:
The answer is yes, all data will be wiped.
[LG G8 Guides, News, & Discussion] mangojain:
Thanks. I don't have any troube enabling volte on any rom, and the tmo is also giving me vowifi and emai, like the canadian open, so there was no reason left to not go with the tmo rom on my tmo phone. That is why it is particlarly annoying to encounter this msg. I tried going back to an A10 TMO rom and the error msg went away, but as soon as i upgraded to A11 it came back.
[LG G8 Guides, News, & Discussion] AsItLies:
Oh so yer just getting the nt error msg but still have service. Annoying but if it works...

My mistake, thought you were without service completely.
[LG G8 Guides, News, & Discussion] mangojain:
Another thought .. the whole idea of this process is that you bypass OPID checking by not flashing the sid partitions, suppose I flash the Open_CA on my NAO_US and then edit the totc to replace open_ca with nao_us, what do you think will happen?

Logically, if the OPID matching is being bypassed, it shouldn't matter what the totc value is. And maybe it can help with the NT Code 0 error.

I could even flash the sid partitions after changing the totc.
[LG G8 Guides, News, & Discussion] StvOchi:
I managed to fix the hand ID.

I did this by unlocking bootloader, crossflashing and then relocking the bootloader.

I had to relock the bootloader because the lg mobile switch app was not working with an unlocked bootloader and it was the one I had made a backup with.

It also partially fixed the NT errors I had but brought NT error 0. Even though I have network service but not volte.

I know this might sound stupid but I was wondering if I can receive OTA updates after crossflashing.

I crossflashed from sprint a10 to openCA a11.
[LG G8 Guides, News, & Discussion] KillerTuxedo:
Hey guys, today I just flashed a KDZ from lg-firmwares that I figured out was a US Cellular KDZ, so I don't even have toggles for WiFi Calling or VoLTE after the crossflash. I assume maybe UCL disables this? Idk.

I use Mint Mobile, so I THINK I need a TMO KDZ, is that correct? I've also seen people mention OPEN US (I'm assuming this means no carrier ties?), but I can't find either one linked anywhere.

My model is a Sprint (Well, now US Cellular lol) LM-820UM. Can anyone link me to the VDZ I need to use? Thanks!!
[LG G8 Guides, News, & Discussion] AsItLies:
I don't have the link handy as I'm using my tablet, but just do a search for LG firmware, then up at the top of the URL change where it says um, to qm.
[LG G8 Guides, News, & Discussion] KillerTuxedo:
Is it safe to use one for a different model (UM vs QM)? And would I use G820QM30c_NAO_US_OP_103.kdz? I'm not sure what "NAO" stands for, that's usually where the carrier would be named, but it's not in their region descriptions list.
[LG G8 Guides, News, & Discussion] AsItLies:
The UM and QM are for the same exact phone so they are interchangeable. NAO stands for North America open, Which, means that for carriers like tmo, everything will work exactly as you want without all the bloatware. But some carriers like Sprint and AT&T require you to have their specific devices. It gets a little confusing.
[LG G8 Guides, News, & Discussion] 1maaax:
really helpful, thank you
[LG G8 Guides, News, & Discussion] DiegoKcrz:
Bro que tal, al actualizar se borra toda la memoria flash, has tu respaldo de whatsapp, y con respecto a la rom si OPEN_can que es la rom libre de canada o la de EEUU, es incierto bro, porque depende mas de tu pais, si eres de Canadá por una de Canadá para que pueda funcionar todas las bandas LTE
[LG G8 Guides, News, & Discussion] DiegoKcrz:
Hola, que tal, estoy en la misma situación, soy de Perú y mi operadora usa la banda B4 y B28, ya probé 6 roms diferentes y todas usan solo la banda B4, he instalado roms libres, sin operadora, solo 1 que es la que uso ahora tiene el VoLTE, pero no funciona.

Segun mi lógica su tiene el VoLTE es porque está recibiendo la señal pero no funciona, ahora estoy tiene que ver con el CA (carrier aggregation) ver si está activo o funcional, intente activar sólo las bandas que necesito para que funcionen pero no funciono.
[LG G8 Guides, News, & Discussion] DiegoKcrz:
Camarada TMO, ¿qué es? Si es un operador, en ese caso es mejor instalar una rom diferente, también probé varias roms.

India abierta: G850EMW30a_00_0802

borrar Centroamérica: G850EM30a_00_CLR_COM_OP_0806

Panamá abierto: G850EM30a_00_OPEN_SCA_OP_0806

Alemania abierta: G850EMW30e_00_1103

abrir brasil y chile: G850EMW30a_00_OPEN_SCA_DS_OP_0806

Y de todas solo la de Panamá tiene VoLTE pero tiene una combinación de carrier aggregation, PCELL B4 (primario) y SCELL B17 (secundario), yo soy de Perú y aquí mi operadora usa B4 y B28, yo no se como editar ese B17, llevo varios meses buscando esta informacion hermano, si tienes informacion de las roms que tienes instaladas por favor agregalas para tener la informacion archivada
[LG G8 Guides, News, & Discussion] nhojeric214:
Uhm where to locate QFIL?
[LG G8 Guides, News, & Discussion] madnesshero86:
I am having a unique issue, I have spent the better part of 2 days trying to find a KDZ that gave me Volte on my unlocked ATT g8. I finally found a android 10 TMO us op one that even though the Volte provisioned option is off and greyed out works somehow. After setting the config in universal enabler I was finally able to check my voicemails and make calls so I thought I was good. Come to find out this morning no one can call me. Does anyone have any thoughts on what might be going on?

I appreciate the help and thank you so much for this guide, I was getting sick after just bought this phone this summer not realizing ATT would have some weird reason to not let you use Volte and being scared and slightly confused by some parts of the unlocking/BL process your guide was straightforward and easy to understand.
[LG G8 Guides, News, & Discussion] netmsm:
The directory in which QPST is installed find and go to the folder named bin. There seek for qfil.
[LG G8 Guides, News, & Discussion] netmsm:
Try switching the network mode to automatic.
[LG G8 Guides, News, & Discussion] nhojeric214:
Got it thanks! Though i cant seem to do step 2 on it. How to change storage to UFS?
[LG G8 Guides, News, & Discussion] madnesshero86:
It is currently on Automatic LTE/3g/2g.
[LG G8 Guides, News, & Discussion] netmsm:
Go to Configuration > FireHose Configuration.
[LG G8 Guides, News, & Discussion] netmsm:
Maybe you need to revise settings done in universal enabler.
[LG G8 Guides, News, & Discussion] nhojeric214:
What if i accidentally pressed start in LGUP while in the Process it is on Refurbished?
[LG G8 Guides, News, & Discussion] nhojeric214:
Dang bricked my phone due to incomplete details on steps. Thanks
[LG G8 Guides, News, & Discussion] StvOchi:
You have to restart the process again if you have not finished flashing.

It happened to me and had to cancel the process midway then start from the beginning again
[LG G8 Guides, News, & Discussion] nhojeric214:
Already redid the qfil steps again and lgup but to no avail. I think i soft bricked my phone i made back up but dont know which is which is ftm partition etc..

EDIT:

Got it working now but it has an error every boot up. Goes away tho after 1 tap.
[LG G8 Guides, News, & Discussion] Heridg:
Tengo una pregunta sobre el flash cruzado,

Ya le hice la cruz a mi g8 pero hace un tiempo revisando la pagina de firmware de lg me di cuenta que acaban de subir una actualización del kdz canadiense con el cual le hice la cruz a mi g8, la pregunta es como se haría el proceso de actualización?

seria como la primera vez?

¿O el proceso sería diferente?
[LG G8 Guides, News, & Discussion] madnesshero86:
I flashed the OQM US open version to it and I got it working with some combination of settings changes, then after restart can't call or receive calls anymore.

This is so weird. After factory reset I can call and receive calls data and everything works even though I get NT.code error 0. And I haven't gone into any hidden menus or changed any settings, just put in the APN. After I restart phone though calls stop working. I not been able to get it consistently working again except with a factor reset and that is only until I restart the phone.

I think I am just going to give the op koren KDZ a try, but was waiting out of fear of not being able to switch back and the possible camer issues. Do you think it would work to only erase and then restore the koren modem_a and b instead of the whole image?
[LG G8 Guides, News, & Discussion] netmsm:
I do not think so. However, you can create a backup of current modem partition and flash Korean modem to have it checked practically.
[LG G8 Guides, News, & Discussion] madnesshero86:
Ok, I might do that later. Is there a better partition to flash where those settings would be stored?

So I think I have at least trialed it out enough times to say this is working consistently, but basically any time I do airplane mode for a period of time or restart the phone I lost the ability to make calls, however I can go into universal enabler and add another new config and it starts working again. I do wonder if when I start traveling if handover will work, or if I lose connection in a building will it come back or will I have to go back into enabler but until I find out I think I can live with it as is as I rarely restart it or do airplane mode and have the codes memorized at this point.

So at this point I am wondering if there is a setting keeping it from picking a working config from the enabler when it restarts as when I look at the list there is a ton of empty configs I cant get rid of as well as about 5 red pocket configs from each time I add a new one. I suspect that as someone said earlier that the problem is ATT checking the IMEI and saying nope you have that one version we don't feel like supporting and somehow playing with the configs is keeping it from checking that or maybe delaying it.

I appreciate all your answers throughout this post to everyone and myself.
[LG G8 Guides, News, & Discussion] netmsm:
I do not have enough knowledge about this issue you are facing. Perhaps some of network settings are stored by nv-items in modemst1 and modemst2. There are some ways to modify them but before doing anything to them create backup since they exclusively belong to your phone and cannot be replaced or restored by backups of others.
[LG G8 Guides, News, & Discussion] min128:
Anyone know if the phone still can install OTA updates after crossflashed? Thanks
[LG G8 Guides, News, & Discussion] artyom1603:
if you did crossflesh, there will be no updates until you flash your native firmware
[LG G8 Guides, News, & Discussion] mpena:
Pudiste actualizar vía upgrade vía LGUP?
[LG G8 Guides, News, & Discussion] Heridg:
I don't dare, so I did the whole process
[LG G8 Guides, News, & Discussion] DiegoKcrz:
MOD EDIT: ENGLISH TRANSLATION ADDED

Dear I have some queries, I put the "G850EMW30a_00_OPEN_SCA_DS_OP_0806" from Chile in the g8x, but when I go to see I get the G850um, it seems very strange to me.

Another doubt I have is that when, despite the fact that I put a rom where the bands used are of the Asia-Pacific standard, I still get B17, which is the North American standard.

Another doubt that before changing the rom I had the mcfg_sw.mbn from TMO (T-mobile) I put it to the test, I went to see if it changed and it's still the same. TMO, does anyone know what's going on? I am supposed to have the OPEN version, it means free of operator bands, it should recognize all the bands.

-------------------------------------------

Estimados tengo unas consultas, puse el "G850EMW30a_00_OPEN_SCA_DS_OP_0806" de Chile en el g8x, pero cuando voy a ver me sale el G850um, se me hace muy raro.

Otra duda que tengo es que cuando, a pesar de que pongo una rom donde las bandas que se usan son del estándar Asia-Pacífico, me sigue saliendo B17, que es el estándar norteamericano.

Otra duda que antes de cambiar la rom tenia el mcfg_sw.mbn de TMO (T-mobile) lo puse a prueba, fui a ver si cambiaba y sigue igual. TMO, ¿alguien sabe lo que está pasando? Se supone que debo tener la versión OPEN, significa libre de bandas de operador, debe reconocer todas las bandas.
[LG G8 Guides, News, & Discussion] netmsm:
Sounds like what you need is provided here.
[LG G8 Guides, News, & Discussion] DiegoKcrz:
Bro thanks for your answer :D, if I followed those steps of the link, but the mcfg_sw.mbn file does not exist for my country, all the available ones are from usa, sprint, at&t, t-mobile, etc, I need entel Peru.

The other option is that some user who has G8x in Peru, extract this file and give it to me, which will not happen.
[LG G8 Guides, News, & Discussion] Heridg:
I have a question about cross flash,

I already did the cross to my g8 but some time ago checking the lg firmware page I realized that they just uploaded an update of the Canadian kdz with which I did the cross to my g8, the question is how the process would be done update?

would it be like the first time?

Or would the process be different?
[LG G8 Guides, News, & Discussion] netmsm:
Anytime =)

In the recent update, the way of extracting mbn files from modem partition has been explained in that thread so you can do it by yourself.
[LG G8 Guides, News, & Discussion] netmsm:
Exactly.
[LG G8 Guides, News, & Discussion] don'tbrickit:
delete
[LG G8 Guides, News, & Discussion] KTIENDA:
i have a g900um. lg velvet at&t , opid mismatched, im looking for. LGE SM7250 Firehose. loader, for repair it, maybe can u helpme with this loader...

thanku
[LG G8 Guides, News, & Discussion] johnbrady93:
I used this guide to update my G8X Sprint G850U to the USA Open 30b 850QM firmware. Everything went off without a hitch. I only have a couple issues. One is the NT code error at boot, which doesn't seem to affect anything. The bigger issue I have is that disconnecting from Wifi and picking up 4G seems to get stuck sometimes, leaving me with no data connection. It's not a huge issue because toggling Airplane Mode on and off gets me to connect to 4G, but I'm curious if anyone else has been running into this. It also occurs sometimes while on Wifi out of the blue, with a popup asking if I want to switch to Global mode. Never had this on any previous flash of the G8x so I think it's software related

Another issue, though possibly just from not having run the phone long enough, is that the Battery page in the Settings still shows Analyzing Usage a week after flashing. Odd and not a detriment, but also curious if this is normal. Turns out it just took 4 recharge cycles and about a week for it to finally show up. Yay!

Another minor issue is that the phone seems to soft reboot when I plug it into a USB-C dock I typically use with my computer. Very odd.

Anyway, thanks OP for the guide, for all the other folks here with G8X models confirming the fix worked for them, and for the G8X pages for firehose files and other resources.
[LG G8 Guides, News, & Discussion] MrCitan:
Good Morning. I used this awesome guide to change my Verizon G8 to the Canadian firmware. I did get the same code error on start up however everything still works. is the mis match error to do with the modem? do you think if i followed the modem update guide on here that it might get rid of this error?

This guide here: https://xdaforums.com/t/guide-no-ro...ther-qualcomm-powered-lg-devices-too.4343655/
[LG G8 Guides, News, & Discussion] MrCitan:
**update** oddly enough I did a reflash to canadian android 10 firmware and the code error didnt pop up. so i will stay on android 10 for now. thanks for this great guide!!
[LG G8 Guides, News, & Discussion] jian1:
Will this cause any issue if I crossflash a euro (G850EMW) firmware to a CAN(canadian) one? The reason I wanted to crossflash is that EMW supports dual sim while CAN doesn't, but heard people had radio, network troubles after flashing thus made me cold footed
[LG G8 Guides, News, & Discussion] jian1:
Do you need any extra steps for flashing the German version? does it have Chinese support? Can you do a dual sim on it after flashing? thanks
[LG G8 Guides, News, & Discussion] netmsm:
I do not have it, sorry.
[LG G8 Guides, News, & Discussion] Nemo Draksler:
I didn't do any extra steps to flash it. I did a quick check and it seems to have Chinese language available in settings. I tested another SIM simultaneously to verify if dual SIM was available, but it didn't do anything.
[LG G8 Guides, News, & Discussion] jian1:
Ok I see, so even by flashing the dual sim ROM, the US/CAN version doesn't support dual sim mechanically.....
[LG G8 Guides, News, & Discussion] Nemo Draksler:
That seems to be the case. However, you should check if it exists a German firmware that isn't dual SIM, because you can see some ROMs that have "DS" on their names, but others don't. I think I downloaded one without the DS on its name because none of those were A11, just A10. If you really want to test if dual SIM is possible, maybe you should try with one of those DS ROMs.
[LG G8 Guides, News, & Discussion] damod11:
hi. from my understanding here, your at+t is sim locked ?
[LG G8 Guides, News, & Discussion] nicksss93:
I'm also curious to know if the unlocked Canadian version can indeed support dual sim through crossflashing. From what I know, the G820UM Sprint version is dual sim - and if all G820UMs have the same hardware, then the Canadian G820UM should have the hardware needed to be dual sim as well.
[LG G8 Guides, News, & Discussion] AsItLies:
Just curious, but how could a phone possibly be dual sim if it doesn't have a 2nd imei assigned to it?

every phone I've ever had that was either dual sim or sim + esim would show 2 imei on the box.

It seems that even if a phone *might* have the hardware, and you could flash the dual sim rom... there's no imei for the 2nd one?