Flashing LM-G850UM1 - LG G8X ThinQ Questions & Answers

Hi everyone, my first post on XDA.
My wife and I both own a LG G8X thin q ATT branded phone - LM-G850UM1. Both phones were working on red pocket until my phone updated to Android 11. I don't know how that happened except I turned on developer mode on my phone and selected auto update. I think that may have caused that. I've since turned that off. But now my phone is on Android 11 and won't take or make callse.
My wifes phone, same model but using Android 10 works just fine still.
So far my only hope is to try to flash the phone back to android 10 but there's a catch. The KDZ file i found says it's for canada on the LG fan site.
LG G850UM(LMG850UM) aka LG G8X ThinQ - LG-Firmwares.com
LG LMG850UM download the firmware for free! Detailed installation instruction. Video review of the model and its features. User feedback and latest news.
www.lg-firmwares.com
My wifes phone shows G850UM20e as the version but on the LG fan site is shows this as canada? ATT is in the USA - leavine me confused.
Could I use the kdz file to flash to my phone? Not sure if it will brick it. Also are there drivers needed to install on the phone? I know there's a usb driver to connect the phone to a pc to flash it, but I thought I read someone saying you have to install the phone drivers to the phone.
Any advice, I'm all ear.
Auggy

Auggybendoggy said:
Hi everyone, my first post on XDA.
My wife and I both own a LG G8X thin q ATT branded phone - LM-G850UM1. Both phones were working on red pocket until my phone updated to Android 11. I don't know how that happened except I turned on developer mode on my phone and selected auto update. I think that may have caused that. I've since turned that off. But now my phone is on Android 11 and won't take or make callse.
My wifes phone, same model but using Android 10 works just fine still.
So far my only hope is to try to flash the phone back to android 10 but there's a catch. The KDZ file i found says it's for canada on the LG fan site.
LG G850UM(LMG850UM) aka LG G8X ThinQ - LG-Firmwares.com
LG LMG850UM download the firmware for free! Detailed installation instruction. Video review of the model and its features. User feedback and latest news.
www.lg-firmwares.com
My wifes phone shows G850UM20e as the version but on the LG fan site is shows this as canada? ATT is in the USA - leavine me confused.
Could I use the kdz file to flash to my phone? Not sure if it will brick it. Also are there drivers needed to install on the phone? I know there's a usb driver to connect the phone to a pc to flash it, but I thought I read someone saying you have to install the phone drivers to the phone.
Any advice, I'm all ear.
Auggy
Click to expand...
Click to collapse
Make a backup copy of the firmware from her phone.If you're still using AT&T as your provider,flashing a different firmware won't fix the VoLTE issues.You need the AT&T firmware on the device for it to work.If you do make a copy of it I could use a copy as well for my G8x.

Добрый день всем. Вы можете помочь? Нужен полный дамп прошивки lg g8x AT&T

Related

[Q] LG Optimus G Pro F240L firmware update....!

Hi everyone,
I'm comparatively new here. I have LG Optimus G Pro F240L. When I connect it with LG PC Suite through my laptop, it shows the option to upgrade the firmware. However, the download is very slow. It just reached to 35% in three hours once and 37% the second time (I have 1MB DSL connection). Is there any way that I can download the official update manually, so that my phone do not need to be connected all the time with laptop.
Need expert opinion.
Thanks
alaxee said:
Hi everyone,
I'm comparatively new here. I have LG Optimus G Pro F240L. When I connect it with LG PC Suite through my laptop, it shows the option to upgrade the firmware. However, the download is very slow. It just reached to 35% in three hours once and 37% the second time (I have 1MB DSL connection). Is there any way that I can download the official update manually, so that my phone do not need to be connected all the time with laptop.
Need expert opinion.
Thanks
Click to expand...
Click to collapse
Search the guide about flashing your mobile by LG Flashtool here. You can download latest firmware ( Officials or Custom ) available to your mobile by the given links in this forum..
So that way you can pause the download and resume it later when possible. Then flash your mobile with it..
But first you need to learn how to flash.. Which is quite easy if you follow the instructions..
Thanks a lot for the suggestion.
I have learned enough and have flashed my phone with 5.0.1 successfully
I had flashed my LG G Pro F240L with 4.4.2 and then 5.0.1 afterwards. Can I again go back to 4.4.2. If yes, how? As 5.0.1 is consuming lot of battery. One more question, when I want to dial in 5.0.1, it does not accept my country code and call ends with going through. I have to remove country code from my phone and then dial. This way it works. Any idea what to do?

LG G5 AT&T H820 Firmware update

Hello, I have a trouble with my phone. I have H82020o installed in my phone. But there' s arreor with manual mode in camera, so I tried to downgrade it. I try to flash H82011n, but there was error, and my phone stacks in Firmware update screen. Please help, how can i resolve it?
You need to flash it with your pc or something where you can put an usb to load an file.You have realy best programs on internet and official LG program for upadates and much more...so when thrn on an phone put an usb in pc and flash it when do that part download firmare for your lg phone you have it on lg website lg firmwares /type that on web sreach download and firmware for your model/h830/h840/h850/....and phone will turn and off few timea and that is it.You fixed it!Have an nice day.

help whith an lg g3

hi, first of all, sorry for my english, i'm from spain
one or two days ago I flash a custom rom in a lg g3 d855 that I had just lying arround, but randomly it start to do strange things, like rebooting, disabling wi-fi..., after like two hours doing that it just start a bootloop, so I flash de original lg to solve it(an older one, the v30b, wich is rooteable), but it just continue doing strange things, al de wireless conections aren't working, the kingroot app just displays a black screen, it have random reboots...
anyone can give me some help or something that i can do??
if you need some extra information just ask it
byeee
Hi man according to me your phone LG G3 is using a Snapdragon Qualcomm 821 CPU so you should try the steps given in the thread by me.
Link : https://forum.xda-developers.com/showthread.php?t=1936747&page=2
Drop a like/thanks if I was able to help you.
x.ak**** said:
Hi man according to me your phone LG G3 is using a Snapdragon Qualcomm 821 CPU so you should try the steps given in the thread by me.
Link : https://forum.xda-developers.com/showthread.php?t=1936747&page=2
Drop a like/thanks if I was able to help you.
Click to expand...
Click to collapse
nope, that didn't work cuz the lg stock roms come in .kdz format and that program uses .mbn files, but i used lg flashtool 2014 and flashed the stock rom again, but it don't change anything
bentek1 said:
nope, that didn't work cuz the lg stock roms come in .kdz format and that program uses .mbn files, but i used lg flashtool 2014 and flashed the stock rom again, but it don't change anything
Click to expand...
Click to collapse
How to unbrick soft bricked LG G3 which is stuck in bootloop
Download LG PC Suite here. Don’t worry about USB drivers, this program will automatically install them.
Turn your LG G3 off.
Connect your LG G3 to your computer and hold the Volume Up button.
This will put your phone into Download Mode.
After a few seconds, the Download mode.
Open LG PC Suite.
Tap on the Repair button and follow the steps that the program provides.
Wait for the program to fix your LG G3.
PC SUITE: http://www.lg.com/uk/support/pc-suite

Please help with this brick, i',m really angry with this Phone -LG VS500 (K8 V)

I have all day trying to solve this problem, I did an update for the Verizon application and now I am in the download mode, I want to recover it using LGUP but it says that the model is unknown, I used uppercut, installed the different .exe of the dll , and nothing.
I'm about to EXPLODE
AND THE FLASH TOOL LEFT IN PRIMARY GPT AND THEN AN ERROR
Adriantech said:
I have all day trying to solve this problem, I did an update for the Verizon application and now I am in the download mode, I want to recover it using LGUP but it says that the model is unknown, I used uppercut, installed the different .exe of the dll , and nothing.
I'm about to EXPLODE
AND THE FLASH TOOL LEFT IN PRIMARY GPT AND THEN AN ERROR
Click to expand...
Click to collapse
uhm, never used LGUP even if I have G2 and G Pad 7 (always used LG Flash Tool but it seems is for international version only), but anyway: guess you installed the right drivers and check if there are errors in Device manager (the exclamation mark in the driver icon)? Usually when LG devices are not recognized by the flashing tools the issue is with drivers, so trying on a different PC may help (you can't imagine how many times worked for my LGs!!).
Also the LG PC Suite (don't know if it's available for you) has an option to restore a bad update (firmware update) and - like LG Flash Tool 2014, too - you have the option to insert the IMEI before attaching the device to the PC, that way you somehow force the tool to select the right firmware to flash, does LG UP has something similar?
brainvision said:
uhm, never used LGUP even if I have G2 and G Pad 7 (always used LG Flash Tool but it seems is for international version only), but anyway: guess you installed the right drivers and check if there are errors in Device manager (the exclamation mark in the driver icon)? Usually when LG devices are not recognized by the flashing tools the issue is with drivers, so trying on a different PC may help (you can't imagine how many times worked for my LGs!!).
Also the LG PC Suite (don't know if it's available for you) has an option to restore a bad update (firmware update) and - like LG Flash Tool 2014, too - you have the option to insert the IMEI before attaching the device to the PC, that way you somehow force the tool to select the right firmware to flash, does LG UP has something similar?
Click to expand...
Click to collapse
Yes, I have the universal drivers, I have tried it on another computer, I will try lg pc suite to see, lg flash tool only works with a single KDZ but it does not install, if I try to put the latest version it says it is not compatible: S
Adriantech said:
Yes, I have the universal drivers, I have tried it on another computer, I will try lg pc suite to see, lg flash tool only works with a single KDZ but it does not install, if I try to put the latest version it says it is not compatible: S
Click to expand...
Click to collapse
there are different LG Flash Tool tools.. One is LG Flash Tool 2014, requires kdz; one is LG Flash Tool 2.xxx and it requires tot firmware files; and then there's the original LG Flash Tool (used by PC Suite too) and it's the only one that let you enter the IMEI and it dynamically download the original firmware from LG servers.. but this is for my LG devices, G2 and G Pad 7, don't know if they're all good for your VS500..
brainvision said:
there are different LG Flash Tool tools.. One is LG Flash Tool 2014, requires kdz; one is LG Flash Tool 2.xxx and it requires tot firmware files; and then there's the original LG Flash Tool (used by PC Suite too) and it's the only one that let you enter the IMEI and it dynamically download the original firmware from LG servers.. but this is for my LG devices, G2 and G Pad 7, don't know if they're all good for your VS500..
Click to expand...
Click to collapse
When I try to use it, the LG flash tool got stuck on PRIMARY GPT 00000, and when I used Verizon S / W it got stuck at 3%.
The page can not provide me with a KDZ file, I have the latest version of this phone (VS50020I and VS500PP8). I'm using LG Firmare to download. I am very frustrated, I am using Lg Flash 1.8.x I need the latest version of this program
Adriantech said:
When I try to use it, the LG flash tool got stuck on PRIMARY GPT 00000, and when I used Verizon S / W it got stuck at 3%.
The page can not provide me with a KDZ file, I have the latest version of this phone (VS50020I and VS500PP8). I'm using LG Firmare to download. I am very frustrated, I am using Lg Flash 1.8.x I need the latest version of this program
Click to expand...
Click to collapse
and lg flash tool 2014 says contact administator

Super-sume pro?

Hey guys... Do you think I can root my LG g8x (lm-g850um 20f) with kingroot and then install super-sume pro which will then remove kingroot and it's shady files and will automatically replace with superSU. I would like to use TWRP but I understand it is still having problems. My phone is Carrier unlocked but I'm not sure if the bootloader is unlocked.
I have the same question. I have 2 G8x - a G850UM 20k and a G850QM 20b. LG has made promise to upgrade G8x to Android 12. Android 11 is coming in 3Q 2021. So I am not interested in 3party ROM. But I do want to root the phone and edit the "sound" config file so the Quad DAC would kick into high gear even for <50ohm IEMs or headphones. I did that with a LG V20 and a V30. I am certain this can be done with the G8x.
But I need to carefully root the phone, edit the file, and unroot cleanly afterward. kingroot scares me.
If nobody can answer the question, then I'm thinking about taking my phone down to the public library that has pretty laid back administration restrictions on software installs. I'll just try to follow one of the rooting guides from this forum and download all the software and hook my phone up via USB to the library computer since it's a Windows computer and try it there!

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