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[Q] D850 How to Flash Stock Firmware

hello everyone, i have got lg g3 d850 at&t model. i think it has got soft bricked, it keeps on showing popups like * unfortunately failed to open Lg smartcover* and these popups dont go away. i am not being able to use my phone thats y i want to ask how can i flash stock firmware onto my lg g3 d850 32gb model 3gb ram. please guide. thanks.

A simple LG G3 back to stock search would show you my guide, even with Google. But here you go. Follow the tot method. http://forum.xda-developers.com/showthread.php?p=53452990
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[Completed] LG G2 Touch not Working After Software Update...

Hi,
I have Lg G2, and I upgraded it Android Lollipop using Lg PCSuite. After the completion of upgrading my Cell phone Touch screen is not working properly, as I touch on the top of the screen and something is touched on the bottom of the screen.
Now, I used Lg Flash Tool to Downgrade it back to the old Kitkat rom, I found tutorials from here and I downloaded .tot file for Lg G2 D802, it flashed properly on my cell phone but the problem is same.
Then, I searched few threads here where I found that this problem occurs when you upgrade to a non international version and I must open the backcover and see the original model, where I found LS980 written on the back. I downloaded .tot file for Sprint and now when I flash, it says like that you cannot start install on D802 with LS980 Bin file..
Please Help

jydee said:
Hi,
I have Lg G2, and I upgraded it Android Lollipop using Lg PCSuite. After the completion of upgrading my Cell phone Touch screen is not working properly, as I touch on the top of the screen and something is touched on the bottom of the screen.
Now, I used Lg Flash Tool to Downgrade it back to the old Kitkat rom, I found tutorials from here and I downloaded .tot file for Lg G2 D802, it flashed properly on my cell phone but the problem is same.
Then, I searched few threads here where I found that this problem occurs when you upgrade to a non international version and I must open the backcover and see the original model, where I found LS980 written on the back. I downloaded .tot file for Sprint and now when I flash, it says like that you cannot start install on D802 with LS980 Bin file..
Please Help
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LG L50 Sporty Help!

Hello
Just got a small problem with my phone. I have rooted and unrooted my LG L50 multiple times now with different programs, iv changed to boot image which is somehow messed up now even though it was fine before and i'm wondering if there it a way of reinstalling android on it (kitkat 4.4.2) or maybe even put android lollipop onto it if possible.
Please reply quick thanks

for lollipop we need unlocked bootloader witch im currently working on.but i will probably faill--.-- to get your android 4.4.2 installed you will need flash tool and a kdz file just follow this guide and good luck http://forum.xda-developers.com/showthread.php?t=2797190 .. and btw this will not wipe your data you will have to do that later

L50 Sporty
I tried to install two KDZ ROMs by the KDZ updater however it consists as Phone not found, and by the LG support tool it arrives at 80% of the rom install in the error apparatus. Anyone who can help thanks.

What can i do to get my lg g3 working again?

:crying:
My issue is quite complicated. Please be patient and read on.
Less than a week ago, I bought an LG G3 D855. It wasn't brand new and definitely out of warranty.
It was on the 4.4.2 Os version but I couldn't update it because I couldn't locate the UPDATE CENTER and after some research online, I found out it was because it was rooted. I couldn't find a Supersu application anywhere on the phone anyways but Root checker confirmed that it was rooted.
I downloaded the stock kitkat firmware in a .tot format and I tried flashing using LG Flash Tool for TOT but it failed because "Device version is different"
I checked the Imei online and it stated that the device is a Sprint LS990 but the details embedded in the phone all say it is D855
I checked online and found a couple of posts about this error and one user said he was able to fix it by flashing the actual Sprint .tot with the lg flash tool. I tried that but it didn't work. It still said "Device version is different. Check BIN or dll"
I checked online and found results pointing to a generic .dll file for G3s and I downloaded it but when I used it on the Flash tool, it resulted to an error "CrossDL blah blah"
So I found a Marshmallow kdz file. LGUP won't see my device model so I was able to flash it after editting the software in my build.prop to D85510n.
***I have always changed the port to COM41 in all the steps I used
The LG UP detected my model and it flashed to 100% but got stuck on a bootloop by loading the lg screen, freezing and restarting by it self. It never gets to the homescreen.
I downloaded lollipop kdz reflashed using LGUP in a form of downgrade and it got to 100% and got stuck at the lg screen while trying to reboot.
I redownloaded the stock kitkat rom and used the Lg flash tool but it failed. It said 'PID null IMEI Null"
I used LGUP to reflashed. It came to my understanding that the LGUP can flash both kdz and tot. So it flashed to 100% but got stuck at the lg screen and I have tried all I can but it is stuck. It can go into download tho. I don't know what to do about the IMEI. I don't know if the last flash retrieved it. I don't kniw what to do.
It no longer shows as LGE AndroidNet USB Serial
Please can anyone help me?
I just need my phone to work again. I was stubborn and now I regret it. I should have just stuck to kitkat. I'm so desperate to get my phone working that I wouldn't mind Android Froyo Os if it was ever possible.
PLEASE HELP!!!

I also had some what same problem with my old lg device ... Here's what you can do:-
Download any custom rom of your lg g3 Like Cyanogenmod and flash it via recovery.
Recovery can be stock or custom it doesn't matter.
Remember to wipe dalvik cache and wipe data before flashing the ROM. I did it and my device was working fine.
Remember that first boot
always takes 2-3 mins so be patient.
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Need Help!

Hello,
Good day to you all
I have flashed my LG G3 (LS990) to an custom ROM (ANDROID 6.0) with a D855 ROM, and with time phone become so dizzy and slow, I did a backup to LS990 and unfortunately I have lost it, now I downloaded the official LS990 firmware but it failed to start flashing, so is there any way to get back to LS990 from D855?