How to Flash Stock firmware on LG G820TM G8 ThinQ
Flash Stock KDZ ROM on LG G820TM G8 ThinQ: Welcome back. I’m going to discuss different steps you should follow to flash stock firmware/ROM successfully on your LG smartphones/tablets. Android, being open-source that provides users to have complete control over everything. We can root our device and flash Custom ROMs and that gives us some enhanced features on our smartphones.
Why I want to Flash Stock Firmware
When a new mobile comes up with some higher features with a high budget is launched, there will be too many third-party developers who come out to give or enhance some extra features to the devices. Rooting your phone give results in losing the validity of the warranty provided by your manufacturer. You can unroot the device whenever you want, but sometimes the device may also trace and the manufacturers might know. But rooting your device gives you many such features such as complete control on System apps or bloatware, Mute notifications, and a lot more and it updates your device to the recent versions all the time.
But having Custom ROMs in our phones or the process of it is not that easy as we say. One wrong step, and there you will be with your device bricked. In such cases, you should go for flashing the stock firmware.
LGUP Tool Vs LG Flash Tool
A few years ago, in 2014 LG Flash tool is popular to flash the firmware on LG phones. But that app comes with lots of bugs like connection problems, hangs lots of time, not able to read the firmware. So after that, a new flash tool comes on the board and yes it is LGUP Tool. It is a small and bug-free tool for all LG Android users.
Download and Install Stock firmware on LG G820TM G8 ThinQ
Proceed at your own risk. flashstockrom.com will not responsible for any mistake and any damage that might occur to your device while performing the following operation. Don’t skip any step.
Download LG drivers, and LGUP. Make sure that you have the latest version downloaded and installed
Download and Install Stock Rom for LG G820TM G8 ThinQ
Download the KDZ/TOT firmware for LG G820TM G8 ThinQ, please choose the right Stock ROM for your device if not, the device may Hard break /Dead.
Download and Install LGUP.msi on your computer from which you are initiating the rooting from.
Press and hold the volume up key while you power off your Device
Connect your phone to the computer by using USB cable.
Switch your phone to the download mode.
Open LGUP software on your computer
Now select Upgrade Option.
Choosing to refurbish, upgrade in LGUP:
In order, to upgrade to a new firmware, like moving from Marshmallow to Nougat, choose UPGRADE option.
For a full wipe and flash a clean firmware installation, and run again once you set it as above. You will notice now that the MM KDZ will still showing in the FILE PATH section. Now, select REFURBISH and make sure BIN file is ticked.
In order to downgrade to Lollipop from Android Marshmallow, select REFURBISH and make sure BIN file is ticked.
Select your already downloaded KDZ firmware file.
Flash Stock firmware on LG G820TM G8 ThinQ
After opening, Click the start button to start the installation.
Wait for the process to complete.
It will reboot automatically, if not reboot it your end.
Frequently Asked Questions Listed Below
I can’t Flash Stock Rom on LG G820TM G8 ThinQ
Do it again with fresh Files. Your problem is persist then Leave a Comment With Full details about error. Then our team will help you. Or try LG Flash Tool 2014. you can find Full guideline from here about Lg Flash tool 2014
I Can’t Boot to Download Mode on LG G820TM G8 ThinQ
- Press Power button
- Select Turn off the Device
- press the volume up button on your LG
- During you are holding the volume up key, plug in your phone’s USB Data cable.
- Keep pressing the Volume up Key until the download mode appear.
phone restarted itself but is stuck on the start up screen
Take these steps to get into Recovery Mode.
- Switch off your LG G820TM G8 ThinQ (complete a full shut down process)
- Then, press and hold Power and Volume Down buttons
- Keep pressing the buttons until the LG Logo is being displayed.
- At that point release the buttons for about 1 second.
- After that immediately press and hold Power and Volume Down keys and press once more.
- After that the recovery mode menu will be displayed on your LG G820TM G8 ThinQ.
- You can use Volume Up and Down buttons in order to scroll up and down and you can press Power key to select.
- You’ll have to choose Wipe Cache Partition as your option the first time around. You won’t lose any data doing this
Didn’t help? then You can use Recovery Mode and Factory Data Reset to do so..
unresponsive to touch or power button controls
now my screen became consistently unresponsive to touch or power button controls. I did Factory reset also, but problem persist. If you face this kind of problem,
please Try to Factory reset. If it not works, then try to CSE flash. Not the normal Flash. If not works download another Stock Rom because that Rom may be damaged.
Connection to server failed. Try again in a moment
Now it says ” Connection to server failed. Try again in a moment” and my phone sucked in Download mode.
Don’t press Ok and please wait because still copying in the background window and on phone screen as well. however if not works then, Press power button and hold it till u get lg logo. any other problem? please comment us..
Problem with communication between cell phone and Pc
- Try another USB port.
- Install LG Drivers
- Try another USB cable.
How to install Lollipop, Marshmallow, Nougat, Oreo, Pie
Yes you can. but you have to find the Stock or Custom Rom then use above guideline.
revert back to the previous version of Android
When you Flash a new Custom Rom, If it is still testing one, then you will definitely get errors.. Like GPS Camera fail, WIFI fail, NFC fails.. So, in this situation, You have to get previous version of android OS. you can use this post to go Back to kitkat or Lollipop. go above one of Link and find previous version of android.
Model Information Check Fail! LG G820TM G8 ThinQ
it gives me Errors like “Model Information Check Fail!” I’ve tried again and again around 11 times but still errors (I was using original LG USB 2.0 cable and USB 2.0 port) so I’ve decided to try LGUP. But when I’m trying to install it, it also gives me error “Error 2503.Called Run Script when not marked in progress” and “Error 2502.Called Install Finalize when no install in progress” (I’m running Win 10)
I wait around minute or two after that seeing “Waiting for connection” in LG Flash Tool (TOT method). After reinstalling stock kitkat on my LG G820TM G8 ThinQ. I’ve downloaded LG Flash tool 2014 from different source and flashed MM. Now everything works flawlessly.
“Unknown” and “Com 5, Fulmics” LG G820TM G8 ThinQ
There is a solution for you. try this and tell us your feed back – Link
Why is my device’s model not detected in LGUP?
Make sure your devices chipset is supported by UPPERCUT. All models and software variants may not be supported even though chipset is listed.
If you are using a properly working device with UPPERCUT but your device is still not detected in LGUP.you may have a “corrupted” misc partition…
As a last resort it has been confirmed in post #70 .That wiping misc will boot into download mode allows the device to be detected with UPPERCUT + LGUP 1.14. This may not work always and without rooting you can’t do this.
Why does this TOT file keep failing?
In most cases you’re either trying to downgrade and it has been blocked by your phones download mode (not anti-rollback fuse.. that is different)… OR you are trying to use a custom-made TOT file which is not official or signed by LG. Flash an official KDZ instead. Do not ask for KDZs in this thread.. not the place.
LGUP cannot detect my Device, shows the device as unknown model but correctly shows the comports
There is a solution for your LG G820TM G8 ThinQ. Try this and tell us your feed back – Link
LGUP.. Error Code: 0x2000 Failed To Read GPT
- You can try adding Uppercut from link Note: Must use LGUP version 1.14
- If you are not using LGUP-NEW then download from here and use that version. Recommended version to use.
- Still not solved? Read More
LGUP Invalid KDZ – TOT file fix/ stuck wont flash tot/kdz file
This is something I stumbled upon while trying to flash a kdz file to restore my LG G820TM G8 ThinQ. I got an error and couldn’t able to flash the file Read More
error code: 0x2BC / error: user data unmount success and can’t go any further
Try LG Flash Tool 2014. you can find full guideline from here about Lg Flash tool 2014
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