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LG G2 D801 T-mobile 4.4.2 Downgrade ? :(

Hello forum members
I updated to version 5.0.2 via lg flash tool
But the charge is getting worse , I want to install the version 4.4.2..........
but no I do not know. How can I do??
4.4.2 loaded again in the same way??
My English is a little weak Sorry...

Daytona675tr said:
Hello forum members
I updated to version 5.0.2 via lg flash tool
But the charge is getting worse , I want to install the version 4.4.2..........
but no I do not know. How can I do??
4.4.2 loaded again in the same way??
My English is a little weak Sorry...
Click to expand...
Click to collapse
If you use LG Flash tools with 30b KDZ, just find the 20g kit kat KDZ, download, and install it like you install lollipop, takes about 3 to 5 min. i downgrade cause of the same problem, t-mobile my **** battery drain...

Can you re-flash the 5.0.2? My D801 that I am testing has 5.0.2 and currently on battery for 71 hours with light use and still have over 50% battery left. (check e-mails, stream some music etc.)

hpark21 said:
Can you re-flash the 5.0.2? My D801 that I am testing has 5.0.2 and currently on battery for 71 hours with light use and still have over 50% battery left. (check e-mails, stream some music etc.)
Click to expand...
Click to collapse
Yep, you can flash back lollipop, but i dont know about root or twrp or cm12, i dont use it, i think i never will, and to get rid of some of the bloatware that consumes battery, try DEBLOATER, it block from starting some of the tmo apps... good luck:good:

Guerralenta said:
If you use LG Flash tools with 30b KDZ, just find the 20g kit kat KDZ, download, and install it like you install lollipop, takes about 3 to 5 min. i downgrade cause of the same problem, t-mobile my **** battery drain...
Click to expand...
Click to collapse
Guerralenta said:
Yep, you can flash back lollipop, but i dont know about root or twrp or cm12, i dont use it, i think i never will, and to get rid of some of the bloatware that consumes battery, try DEBLOATER, it block from starting some of the tmo apps... good luck:good:
Click to expand...
Click to collapse
Hi, im using d801 with 5.0.2 lollipop... can you show me the steps to downgrade to stock kitkat? my phone is kinda annoying on lollipop. thanks!

infamousvincci said:
Hi, im using d801 with 5.0.2 lollipop... can you show me the steps to downgrade to stock kitkat? my phone is kinda annoying on lollipop. thanks!
Click to expand...
Click to collapse
Well first my english is not so good (i speak spanish and french) so explain you step by step the downgrade process... but im going to leave you a youtube video where they explain how to do it easy....
im going to tell you what you need:
- 20G LG G2 TMOBILE KDZ (THIS FILE MOST BE COPIED ON THE FOLDER OF LG FLASH TOOLS 2014)
- LG FLASH TOOLS 2014
- LG MOBILE SUPPORT TOOL
- DRIVERS
FIRST STEP: TURN YOUR PHONE OFF.. WHEN OFF PRESS VOLUME UP AND PLUG THE USB CABLE, THE PHONE WILL ENTER DOWNLOAD MODE, WHEN YOU SEE THE SCREEN OF UPGRADING FIRMWARE LEAVE YOUR PHONE ON THE TABLE AND DONT TOUCH IT.....
SECOND STEP: GUESSING YOU ALREADY HAVE THE 20G LG G2 TMOBILE KDZ, OPEN THE LG FLASH TOOLS 2014 ON YOUR PC (IF YOU ARE ON WINDOWS 7 OR 8 8.1 ALWAYS RIGHT CLICK AND OPEN AS AN ADMIN)
THIRD STEP: LEAVE ALL THE PARAMETERS IN THE SCREEN LIKE THEY ARE, YOU ARE JUST GOING TO CLICK THE FOLDER WHERE SAYS "SELECT KDZ FILE" AND THEN SELECT THE 20G KDZ YOU DOWNLOAD ALONG SIDE OF OTHER KDZ, YOU JUST SELECT THE 20G KDZ (REMEMBER TO COPY THE 20G KDZ TO THE LG FLASH TOOLS 2014 FOLDER)
FOURTH STEP: OK ONCE YOU SELECTED YOUR KDZ YOU HAVE TO OPTIONS, NORMAL FLASH, IT SAVE YOUR FILES, CSE FLASH IT ERASE YOUR PHONE LIKE IS COMING OUT OF THE LG FACTORY (THATS THE ONE I CHOSE)
LAST STEP: ONCE YOU CHOOSE YOUR FLASH, A NEW WINDOWS IS COMING IN A FEW SECONDS ASKING TO SELECT THE LENGUAGE, SELECT ENGLISH, AND OK... LEAVE THE PROGRAM DO ITS THING AND THE PHONE PLUG IN (I LEAVE MY PHONE PLUG UNTIL ANDROID START THE START WIZARD JUST IN CASE)
THATS IT GOOD LUCK IN GOING TO LET YOU A VIDEO OF HOW ITS DOWN
https://www.youtube.com/watch?v=_hk79nNkqtI
ON THE VIDEO HE IS USING A LG G3, BUT IS THE SAME PROCCES FOR THE LG G2 TMOBILE....

LG G2 D802 downgrade
How to downgrade lollipop to kitkat I Have Already Upgraded from Kitkat to Lollipop But I Want to Downgrade to again kitkat
Please Help Me In Urdu I Don't know English

Metro pcs stylos -tmb-mm

THIS WILL WORK ON METRO PCS STYLO FOR ANY ONE THE WILL LIKE TO HAVE T-MOBILE MM 6.0
OK REMEMBER I NOT RESPONSIBLE IF YOU BRICK
LET GET TO WORK ON GETTING UPGRADE
YOU NEED LG FLASH TOOS AND
T-MBL H63110j_00.kdz
PUT YOUR STYLO ON DOWNLOAD MODE
Press and Hold volume UP Button, while plugs in USB Cable from PC to your Phone
FLASH THE T-MBL OJ ROM
AFTER YOUR PHONE HAVE FULL BOOT UP YOU NEED TO GO TO SETTINGS
GO TO DATE AND TIME UNCHECK -AUTO-DATE-TIME AND THE AUTO TIME ZONE
NEXT TO GO SET TIME AND CHANGE THE TIME TO 11:30 PM .. REBOOT THE PHONE
GO BACK TO SETTING ABOUT PHONE UPDATE CENTER SYSTEM UPDATE
YOU WILL SEE A NEW UPDATE (SO DO THE UPDATE THE FIRST UPDATE IS NOT THE MM ROM ) AFTER THE NEW UPDATE ..FINISH WAIT FEW MINUTES GO BACK AND TO DATE-AND TIME AND CHANGE TO 11:30PM NOW YOU WILL UPGRADE TO MM ROM.....:good::good::good::good::good::good:
TOOL TO FLASH -T-BML ROM TO METRO-PCS
TOOL LINK
http://lgflashtool.com/
T-MBL STOCK ROM
http://www.mylgphones.com/t-mobile-l...e-h63110l.html
DON'T TRY ROOT WITH KING ROOT FOR NOW
Big thank you to T-Macgnolia for the root Guys
LG G STYLO How to root the T-Mobile 6.0 update
http://forum.xda-developers.com/lg-g-stylo/how-to/guide-lg-g-stylo-how-to-root-t-mobile-6-t3333916
i recommend you to do fastboot oem unlock ..that way you can flash the twrp recovery with no problem
this is how i did my Metro -Stylo to get root and twrp recovery working
be aware the you will see this
sending 'recovery' (11300 KB)...
OKAY [ 0.359s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.359s
now recovery did not FAILED ... all you need to do is use this command ( fastboot boot recovery.img)to get to recovery
i use TWRP 2.8.7.0 v10j .... make sure the you flash SuperSU-v2.65 be for you boot up the rom
MetroPCS/Tmobile LG Stylo] Force Marshmallow update
BIg thank you to TheDerekHarper for the video :good:
https://www.youtube.com/watch?v=YDYL1deta44

where can i get T-MBL H36110J_00.KDZ? i flashed tmobile 5.11 on my metropcs cell to see if i could get the MM update but no update, lol
Louie
PS- After i first installed tmobile 5.11 it had a 148 Meg update which i took, after that no other updates...

lmarisy said:
where can i get T-MBL H36110J_00.KDZ? i flashed tmobile 5.11 on my metropcs cell to see if i could get the MM update but no update, lol
Louie
PS- After i first installed tmobile 5.11 it had a 148 Meg update which i took, after that no other updates...
Click to expand...
Click to collapse
Its h631 not h361
http://www.mylgphones.com/t-mobile-lg-g-stylo-h631-stock-firmware-h63110l.html

paco_1 said:
THIS WILL WORK ON METRO PCS STYLO FOR ANY ONE THE WILL LIKE TO HAVE T-MOBILE MM 6.0
OK REMEMBER I NOT RESPONSIBLE IF YOU BRICK
LET GET TO WORK ON GETTING UPGRADE
YOU NEED LG FLASH TOOS AND
T-MBL H36110J_00.KDZ
PUT YOUR STYLO ON DOWNLOAD MODE
Press and Hold volume UP Button, while plugs in USB Cable from PC to your Phone
FLASH THE T-MBL OJ ROM
AFTER YOUR PHONE HAVE FULL BOOT UP YOU NEED TO GO TO SETTINGS
GO TO DATE AND TIME UNCHECK -AUTO-DATE-TIME AND THE AUTO TIME ZONE
NEXT TO GO SET TIME AND CHANGE THE TIME TO 11:30 PM .. REBOOT THE PHONE
GO BACK TO SETTING ABOUT PHONE UPDATE CENTER SYSTEM UPDATE
YOU WILL SEE A NEW UPDATE (SO DO THE UPDATE THE FIRST UPDATE IS NOT THE MM ROM ) AFTER THE NEW UPDATE ..FINISH WAIT FEW MINUTES GO BACK AND TO DATE-AND TIME AND CHANGE TO 11:30PM NOW YOU WILL UPGRADE TO MM ROM.....:good::good::good::good::good::good:
Click to expand...
Click to collapse
i think you should put all the tools in the post so like that people wont be jumping into hoops
thanks

paco_1 said:
THIS WILL WORK ON METRO PCS STYLO FOR ANY ONE THE WILL LIKE TO HAVE T-MOBILE MM 6.0
OK REMEMBER I NOT RESPONSIBLE IF YOU BRICK
LET GET TO WORK ON GETTING UPGRADE
YOU NEED LG FLASH TOOS AND
T-MBL H36110J_00.KDZ
PUT YOUR STYLO ON DOWNLOAD MODE
Press and Hold volume UP Button, while plugs in USB Cable from PC to your Phone
FLASH THE T-MBL OJ ROM
AFTER YOUR PHONE HAVE FULL BOOT UP YOU NEED TO GO TO SETTINGS
GO TO DATE AND TIME UNCHECK -AUTO-DATE-TIME AND THE AUTO TIME ZONE
NEXT TO GO SET TIME AND CHANGE THE TIME TO 11:30 PM .. REBOOT THE PHONE
GO BACK TO SETTING ABOUT PHONE UPDATE CENTER SYSTEM UPDATE
YOU WILL SEE A NEW UPDATE (SO DO THE UPDATE THE FIRST UPDATE IS NOT THE MM ROM ) AFTER THE NEW UPDATE ..FINISH WAIT FEW MINUTES GO BACK AND TO DATE-AND TIME AND CHANGE TO 11:30PM NOW YOU WILL UPGRADE TO MM ROM.....:good::good::good::good::good::good:
TOOL TO FLASH -T-BML ROM TO METRO-PCS
TOOL LINK
http://lgflashtool.com/
T-MBL STOCK ROM
http://www.mylgphones.com/t-mobile-l...e-h63110l.html
Click to expand...
Click to collapse
Worked perfect for me. The 1st time i tried i made the mistake of changing the time pass 11:30pm to a different time and didnt get update so i reflash kdz h63110l then set time to 11:30pm and before i could check for the update it was there.. It has awesome new features like video call.. Thanks for helping me get updated..

Worked?. Although, i never had any luck getting the updates by changing the setting in time and date, but apparently others have.

It amuses me to see just how damn reluctant my metroPCS (Tmobile rom'd) Stylo is on recieving the update to marshmallow.
It doesn't want to work, damn thing.
---------- Post added at 10:37 PM ---------- Previous post was at 10:32 PM ----------
It amuses me to see just how damn reluctant my metroPCS (Tmobile rom'd) Stylo is on recieving the update to marshmallow.
It doesn't want to work, damn thing.

paco_1 said:
THIS WILL WORK ON METRO PCS STYLO FOR ANY ONE THE WILL LIKE TO HAVE T-MOBILE MM 6.0
OK REMEMBER I NOT RESPONSIBLE IF YOU BRICK
LET GET TO WORK ON GETTING UPGRADE
YOU NEED LG FLASH TOOS AND
T-MBL H36110J_00.KDZ
PUT YOUR STYLO ON DOWNLOAD MODE
Press and Hold volume UP Button, while plugs in USB Cable from PC to your Phone
FLASH THE T-MBL OJ ROM
AFTER YOUR PHONE HAVE FULL BOOT UP YOU NEED TO GO TO SETTINGS
GO TO DATE AND TIME UNCHECK -AUTO-DATE-TIME AND THE AUTO TIME ZONE
NEXT TO GO SET TIME AND CHANGE THE TIME TO 11:30 PM .. REBOOT THE PHONE
GO BACK TO SETTING ABOUT PHONE UPDATE CENTER SYSTEM UPDATE
YOU WILL SEE A NEW UPDATE (SO DO THE UPDATE THE FIRST UPDATE IS NOT THE MM ROM ) AFTER THE NEW UPDATE ..FINISH WAIT FEW MINUTES GO BACK AND TO DATE-AND TIME AND CHANGE TO 11:30PM NOW YOU WILL UPGRADE TO MM ROM.....:good::good::good::good::good::good:
TOOL TO FLASH -T-BML ROM TO METRO-PCS
TOOL LINK
http://lgflashtool.com/
T-MBL STOCK ROM
http://www.mylgphones.com/t-mobile-l...e-h63110l.html
Click to expand...
Click to collapse
The flashtool link send me to an odin download??? Not lg flash tool

Wealp. i've wiped the phone and went to stock, lets see what happens next. so far no prompt for updates but at least its running 10i instead of 110j

paco_1 said:
THIS WILL WORK ON METRO PCS STYLO FOR ANY ONE THE WILL LIKE TO HAVE T-MOBILE MM 6.0
OK REMEMBER I NOT RESPONSIBLE IF YOU BRICK
LET GET TO WORK ON GETTING UPGRADE
YOU NEED LG FLASH TOOS AND
T-MBL H36110J_00.KDZ
PUT YOUR STYLO ON DOWNLOAD MODE
Press and Hold volume UP Button, while plugs in USB Cable from PC to your Phone
FLASH THE T-MBL OJ ROM
AFTER YOUR PHONE HAVE FULL BOOT UP YOU NEED TO GO TO SETTINGS
GO TO DATE AND TIME UNCHECK -AUTO-DATE-TIME AND THE AUTO TIME ZONE
NEXT TO GO SET TIME AND CHANGE THE TIME TO 11:30 PM .. REBOOT THE PHONE
GO BACK TO SETTING ABOUT PHONE UPDATE CENTER SYSTEM UPDATE
YOU WILL SEE A NEW UPDATE (SO DO THE UPDATE THE FIRST UPDATE IS NOT THE MM ROM ) AFTER THE NEW UPDATE ..FINISH WAIT FEW MINUTES GO BACK AND TO DATE-AND TIME AND CHANGE TO 11:30PM NOW YOU WILL UPGRADE TO MM ROM.....:good::good::good::good::good::good:
TOOL TO FLASH -T-BML ROM TO METRO-PCS
TOOL LINK
http://lgflashtool.com/
T-MBL STOCK ROM
http://www.mylgphones.com/t-mobile-l...e-h63110l.html
Click to expand...
Click to collapse
Work on metro STYLO and I root with kingroot
Ps.Bootloader is locked I downgrade to 5.1

Rican39 said:
Work on metro STYLO and I root with kingroot
Click to expand...
Click to collapse
Link plz to Kingroot.

TheDerekHarper said:
Link plz to Kingroot.
Click to expand...
Click to collapse
Sorry guy is not happening the bootloader is locked on 6.0 I downgrade to 5.1.1

Rican39 said:
Sorry guy is not happening the bootloader is locked on 6.0 I downgrade to 5.1.1
Click to expand...
Click to collapse
Actually, i was able to make Kingroot work (surprisingly) i followed the above steps (i.e. unlocked the bootloader via adb) and then ran the apk.
It was able to install the root, i was also able to remove the bloatware and root apps.

i have upgrade my metro-Stylo 4 time to TMBL 6.0 sometime it take 24 HR to get the upgrade just have patience you will get the 6.0

TheDerekHarper said:
Actually, i was able to make Kingroot work (surprisingly) i followed the above steps (i.e. unlocked the bootloader via adb) and then ran the apk.
It was able to install the root, i was also able to remove the bloatware and root apps.
Click to expand...
Click to collapse
Yea I did that already but everytime I reeboot my phone get stuck in boot loop error 1003
Oops I think I know what happens ??

Rican39 said:
Yea I did that already but everytime I reeboot my phone ibget stuck in boot loop error 1003
Oops I think I know what happens
Click to expand...
Click to collapse
What happened? But yeah, it's working for sure.

TheDerekHarper said:
What happened? But yeah, it's working for sure.
Click to expand...
Click to collapse
That what happens every time I reboot the phone

Rican39 said:
That what happens every time I reboot the phone
Click to expand...
Click to collapse
Turns out you're right, i disabled oem unlock and rebooted the phone only to be presented with an error.
live and learn, simply keep the oem unlock active at all times or don't root your device from now on.

TheDerekHarper said:
Turns out you're right, i disabled oem unlock and rebooted the phone only to be presented with an error.
live and learn, simply keep the oem unlock active at all times or don't root your device from now on.
Click to expand...
Click to collapse
Yea bootloader is locked

Rican39 said:
Yea bootloader is locked
Click to expand...
Click to collapse
I unlocked my bootloader via adb, the problem isn't that.
It's just that secure boot also needs to be disabled or else it fails.

skinny rom compatability

I've been on mm 6.0 and back to 5.1 .
I restored a twrp 5.1 recovery directly back from 6.0 using twrp . My boot loader
Is unlocked and I've used my own rooting
Method and flashifyed my twrp on both lp and mm. Since i'm on 5.1j with my bootloader still unlocked indicated on my
Splash screen can i safely flash the skinny rom on my metro g stylo with out a boot loop or a soft brick

Why did you go back to 5.1 if you wanted to flash the Skinny ROM?
I am going to try this Skinny debloated ROM soon. I have rooted T-Mobile Marshmallow on my MetroPCS Stylo and am missing some features that didn't flash correctly on my T-Mobile marshmallow.

I am always building stuff. I was working on a complete one click unlock Bl, Root and twrp and then another mm Rom build or two.
I always go back to my own builds cause I personalize them just for me but ran across the skinny while surfing and it caught my attention. I've been around for years and been doing this as a hobby since i retired and keeping myself busy.

viperdink said:
I am always building stuff. I was working on a complete one click unlock Bl, Root and twrp and then another mm Rom build or two.
I always go back to my own builds cause I personalize them just for me but ran across the skinny while surfing and it caught my attention. I've been around for years and been doing this as a hobby since i retired and keeping myself busy.
Click to expand...
Click to collapse
Makes sense now.
Let me know how it goes when you (if) flash that Skinny debloated MM ROM.
I am curious if it works and if all the features like advanced text msgng and video calling and all the MM stuff is on it.

This rom works great so far. With the metro update and this it shouldn't take much to get both versons 6.0 mm. Sure would get custom roms going.
Thanks for your enlightenment.

Skinny Rom works great. The new MS63120B_00_0429.KDZ IS OUT. My Metropcs version phone can be set back to stock and I was wondering If using the new LG UP flasher will care that My Bootloader is UnLocked. I don"t know if it will Interfer and check its status.

viperdink said:
Skinny Rom works great. The new MS63120B_00_0429.KDZ IS OUT. My Metropcs version phone can be set back to stock and I was wondering If using the new LG UP flasher will care that My Bootloader is UnLocked. I don"t know if it will Interfer and check its status.
Click to expand...
Click to collapse
thats a good question...i sure hope it doesnt matter to that tool that the bootloader is unlocked...if for some reason it did, maybe you could use lg flash tool 2014 and flash the lollipop kdz?

I went from t--mo mm to metro Loli..to get the metro mm...
I noticed that the bootloader was still unlocked after the Loli flash and kinda got concerned...
But, it never caused any probs...updated to mm metro and rooted smoothly....
I was kinda wondering if i could just wipe and flash skinny without extra caution and precautions...and then if i thought it was ( in my own opinion I'm entitled to) kinda not what i want..flash my mm metro back up...
Doesn't seem like it's been done..i could be wrong..
The drive to dev for this phone isn't as strong as i was hoping...
But, being the first android I've kept vanilla rooted with few tricks...it's not disappointing.

@Cyconumnum
Does the splashscreen still show
" unlocked bootloader "
And did you take the ota or
Flashed metro mm with lg up or the 2014 tool

I don't know what was debloated. The "Skinny" ROM itself is fine but what was taken out?

viperdink said:
@Cyconumnum
Does the splashscreen still show
" unlocked bootloader "
And did you take the ota or
Flashed metro mm with lg up or the 2014 tool
Click to expand...
Click to collapse
I used the flash tool to flash metro lollipop..
After that I went into fastboot to unlock the bootloader ...and it reported to be already unlocked...
It still showed "bootloader unlocked" at the top of the LG splash on the initial metro lollipop boot...
And reported it again booting the metro mm update
---------- Post added at 11:06 PM ---------- Previous post was at 11:05 PM ----------
Sorry..the LG flash tool

I'm back on my personal juicy lp. I gotta get some new fast sd cards. I am working on another twrp for a friend in my spare time and have to hold up on roms and the total one click project. I would like to do the kdz 6.0 but i need parts .

Update; Found 16gb class 10 and worked skinny Rom, metro ota, and lg up flash tool. They both, metro ota and Lg Flash Kdz never showed skinny rom id'd. It said unknown device firmware. So bye bye skinny Rom. They both left the bootloader unlocked when finished flashing metro updates. As i stated before adb pkg and SuperSu needed updating and reinstalling for root and recovery was required. Splash screen still indicated an unlocked bootloader and loading the kdz from 5.0 kept data partition and required all out of date apps to be updated. Namely goggle playservices, adaway 311 needed (thanks guys) and xposed modules i uninstalled till I get time. Advance messageing was an Lg update not inclued in metro updates. Plenty of bloatware to lighten the load but still seemed less than skinnys bloatware. Good to be back on metro software and all the advance messaging and video calls worked. Now i DO gotta get more new sd's. Really out of parts to work with . Going to best buy to hold me over..
CHEERS ALL hope it helps you guys.
Edit; Forgot to add "Quickboot.apk" works 100% take you into all available modes.

i'm actually really content with it being on a stock rooted with various mods.....wish i could get the soft buttons to theme..that's nothing bad thou lol..
MM is a nice environment ..i wish i could install themes from cm13 .....but, as much i do ..i'm not gonna brick my phone with themes...did it before just changing the font on my F6...ha
but, it's great....makes enough sense....
my guess about the bootloader not getting changed with the ROM would be a bios type thing...i'm not toooo android savy..

Cyconumnum said:
i'm actually really content with it being on a stock rooted with various mods.....wish i could get the soft buttons to theme..that's nothing bad thou lol..
MM is a nice environment ..i wish i could install themes from cm13 .....but, as much i do ..i'm not gonna brick my phone with themes...did it before just changing the font on my F6...ha
but, it's great....makes enough sense....
my guess about the bootloader not getting changed with the ROM would be a bios type thing...i'm not toooo android savy..
Click to expand...
Click to collapse
I like the Stock ROM. There are several options for themes.
Layers in the Play Store
G4 Tweaksbox (requires root)
LG Apps Theme Engine (requires root)
LG SmartWorld (no root required but only available on Marshmallow T-Mobile Stylo ROM)

LG v10 H901 (with Korean board F600s) Update to 6.0/7.0 without Brick

Salam Everyone!
Today i'm going to post About Lg V10 model which says it is of T-mobile (from boot animation) but when you remove battery it show Model H901 (Made in korea) So it is huge confusion between users of this phone. Let me clear this one first, your phone consist of board same as LG v10 Model F600s so if your lg Bridge shows an update of something like "F600S30D 05.27.2017" dont worry it is saying this according to board requirement (Warning: Never update your phone using LG Bridge otherwise you are going to brick your phone). LGup is best for updating LG firmware’s.
Now let’s come to the point on how to update this model to Marshmallow and Nougat. And one thing Do this step by step as described in steps below (one thing i'm not a developer i just do little internet research and with help of some friends i was able to do it without bricking my device).
This you need is for update is Kdz for Marshmallow and Nougat and LG up Software.
Installing and fixing LGup ‘unkown model’ problem:
I've seen some people complaining about lgup not picking up this model so here is a fix you can do it to make it work:
Download LG up software using all the links given below:
Now do it as I say.
- Install LG UP LAB Ver. 1.10
- Install LG UP Store Ver. 1.14
- Install LG UP Ver. 1.14
- Now most important is this file LGUP_8994_DLL_Ver_0_0_3_23
(Now here is a Check whether your LGup is installed properly or not scroll through follow the following address and check is there “Common” folder have File “LGUP_Common.dll” If not please try this process again.
Address: C:\Program Files (x86)\LG Electronics\LGUP\model\Common
And after you are done with installing LGup now time to check if this is working remove back cover of your phone (unplug your phone from USB cable, remove the battery, insert battery while pressing the Volume up button and now plug the USB cable. Your phone will turn on automatically with Download Mode on and yes LGup will recognize your phone immediately without any further delay. Showing Model as “H901”
How to check Phone model using Lg info app:
There is one little check you have to do is… go on play store and download Lg info app install it and check your phone info.
Scroll down and See “Provider Name”: (Now here we will see the exact model number of your phone)
- If it shows SK Telecom This means your phone model is LG F600S aka LG V10.
- If LGT this means your phone model is LG F600L aka LG V10.
- If KTF this means your phone model is LG F600K aka LG V10.
Now after Confirming Model Number Now download the relevant firmware but keep one thing in mind do it step by step don’t try to flash direct Nougat on Lollipop okay this will brick your phone as well.
Updating Marshmallow from Lollipop (6.0 from 5.1.1Stock):
As assumed you have downloaded your concerned firmware (you can do a little search on Google and you will find relevant kdz if you need further just p.m me)
- As I have LG F600S aka LG V10 so I will tell you what steps I used.
- First download F600S20l_00_0503.kdz
Now same take your phone in download mode and let LGup recognize it now Select it under BIN File and (Check the Upgrade option) now press start and It will start upgrading. Leave it for a while and let it complete. Now your phone will turn on without any brick  V10 will download some OTA software updates (as it happened in my case). Check your software Update it will surely say 6.0 
Updating Nougat from Marshmallow (7.0 update):
Download the latest firmware from LG firmware website that says “ 7.x Nougat” in my case it was “F600L30e_00_0517.kdz” (Model F600s)
Do the same as you did while updating to Marshmallow. It will successfully update your phone to latest version. No further complications are there in this step it is so simple.
Some Warnings:
- If you are going to use my technique to update please do it carefully do not skip anything.
- I’m not responsible for any kind of brick phones SD cards. As I said I’m not a developer I’m just like you guys was looking for update my phone and done it will little research and help.
- Do not unplug your phone while LGup is updating your phone.
- I’m not developed any software or any update so it is all online stuff nothing personal: D
- And I’m here to help other please feel free to ask anything form me  I’ll try to help as soon as possible 
You can message me on Whatsap I’ll create a group for help on whatsap as well.
Download Links:
LGUP:
LGUP_Install_Ver_1_14_3.msi--> https://mega.nz/#!uxJzEYpD!aM_qkysRAs0xQU_uU3S2evrdtMcwnSIBOFSM-xZ49YM
LGUP_Lab_Frame_Ver_1_10.msi--> https://mega.nz/#!C1QzzSQD!LzJjQv0Vi5feizmqGkBN_kOgR-qZMphcHOJsxdxZVW0
LGUP_Store_Frame_Ver_1_14_3.msi---> https://mega.nz/#!KwYx0JTL!jg-sljtOmO4RwvOGU879Ip0kL_TxH_Rp7q1LDwHW5GQ
LGUP_8994_DLL_Ver_0_0_3_23.msi ---> https://mega.nz/#!Lxg0kZYY!pQnJZ7HtGT3L6o5i4Q23n4SoFcxLcDMOGig66zOlu6U
For Firmware do search online or p.m me

@hapyfaroq as you mentioned, you have flashed Marshmallow F600S20l_00_0503.kdz !!! and for Nougat you flashed F600L30e_00_0517.kdz !!! which are totally different models. could you please recheck if you typed F600L30e_00_0517.kdz istead of F600S30D_00_0510.kdz

SandyKick said:
@hapyfaroq as you mentioned, you have flashed Marshmallow F600S20l_00_0503.kdz !!! and for Nougat you flashed F600L30e_00_0517.kdz !!! which are totally different models. could you please recheck if you typed F600L30e_00_0517.kdz istead of F600S30D_00_0510.kdz
Click to expand...
Click to collapse
Everything is double checked and then posted so no mistake in the article

Mine is KTF but now running fine on F600L Nougat (and the pcb says it's F600L), not sure what's really happen here. It was H901 Tmo before got bricked.

Thanks @hapyfaroq @runningnak3d for your time & help
Failed several times and gave up with LG UP. So i took my phone to a mobile service center who is good at software flashing. i gave him nougat kdz F600S30D. He converted kdz to dz format and flashed with Octoplus box. my mobile was on 5.1.1 android and directly flashed Nougat. Booted flawlessly and no network problems as well Everything is working just awesome. attached my video of Nougat Overview
F600S Nougat Overview - https://www.youtube.com/watch?v=1imf_Utze44&t=18s

hapyfaroq said:
Salam Everyone!
Today i'm going to post About Lg V10 model which says it is of T-mobile (from boot animation) but when you remove battery it show Model H901 (Made in korea) So it is huge confusion between users of this phone. Let me clear this one first, your phone consist of board same as LG v10 Model F600s so if your lg Bridge shows an update of something like "F600S30D 05.27.2017" dont worry it is saying this according to board requirement (Warning: Never update your phone using LG Bridge otherwise you are going to brick your phone). LGup is best for updating LG firmware’s.
Now let’s come to the point on how to update this model to Marshmallow and Nougat. And one thing Do this step by step as described in steps below (one thing i'm not a developer i just do little internet research and with help of some friends i was able to do it without bricking my device).
This you need is for update is Kdz for Marshmallow and Nougat and LG up Software.
Installing and fixing LGup ‘unkown model’ problem:
I've seen some people complaining about lgup not picking up this model so here is a fix you can do it to make it work:
Download LG up software using all the links given below:
Now do it as I say.
- Install LG UP LAB Ver. 1.10
- Install LG UP Store Ver. 1.14
- Install LG UP Ver. 1.14
- Now most important is this file LGUP_8994_DLL_Ver_0_0_3_23
(Now here is a Check whether your LGup is installed properly or not scroll through follow the following address and check is there “Common” folder have File “LGUP_Common.dll” If not please try this process again.
Address: C:\Program Files (x86)\LG Electronics\LGUP\model\Common
And after you are done with installing LGup now time to check if this is working remove back cover of your phone (unplug your phone from USB cable, remove the battery, insert battery while pressing the Volume up button and now plug the USB cable. Your phone will turn on automatically with Download Mode on and yes LGup will recognize your phone immediately without any further delay. Showing Model as “H901”
How to check Phone model using Lg info app:
There is one little check you have to do is… go on play store and download Lg info app install it and check your phone info.
Scroll down and See “Provider Name”: (Now here we will see the exact model number of your phone)
- If it shows SK Telecom This means your phone model is LG F600S aka LG V10.
- If LGT this means your phone model is LG F600L aka LG V10.
- If KTF this means your phone model is LG F600K aka LG V10.
Now after Confirming Model Number Now download the relevant firmware but keep one thing in mind do it step by step don’t try to flash direct Nougat on Lollipop okay this will brick your phone as well.
Updating Marshmallow from Lollipop (6.0 from 5.1.1Stock):
As assumed you have downloaded your concerned firmware (you can do a little search on Google and you will find relevant kdz if you need further just p.m me)
- As I have LG F600S aka LG V10 so I will tell you what steps I used.
- First download F600S20l_00_0503.kdz
Now same take your phone in download mode and let LGup recognize it now Select it under BIN File and (Check the Upgrade option) now press start and It will start upgrading. Leave it for a while and let it complete. Now your phone will turn on without any brick  V10 will download some OTA software updates (as it happened in my case). Check your software Update it will surely say 6.0 
Updating Nougat from Marshmallow (7.0 update):
Download the latest firmware from LG firmware website that says “ 7.x Nougat” in my case it was “F600L30e_00_0517.kdz” (Model F600s)
Do the same as you did while updating to Marshmallow. It will successfully update your phone to latest version. No further complications are there in this step it is so simple.
Some Warnings:
- If you are going to use my technique to update please do it carefully do not skip anything.
- I’m not responsible for any kind of brick phones SD cards. As I said I’m not a developer I’m just like you guys was looking for update my phone and done it will little research and help.
- Do not unplug your phone while LGup is updating your phone.
- I’m not developed any software or any update so it is all online stuff nothing personal: D
- And I’m here to help other please feel free to ask anything form me  I’ll try to help as soon as possible 
You can message me on Whatsap I’ll create a group for help on whatsap as well.
Download Links:
LGUP:
LGUP_Install_Ver_1_14_3.msi--> https://mega.nz/#!uxJzEYpD!aM_qkysRAs0xQU_uU3S2evrdtMcwnSIBOFSM-xZ49YM
LGUP_Lab_Frame_Ver_1_10.msi--> https://mega.nz/#!C1QzzSQD!LzJjQv0Vi5feizmqGkBN_kOgR-qZMphcHOJsxdxZVW0
LGUP_Store_Frame_Ver_1_14_3.msi---> https://mega.nz/#!KwYx0JTL!jg-sljtOmO4RwvOGU879Ip0kL_TxH_Rp7q1LDwHW5GQ
LGUP_8994_DLL_Ver_0_0_3_23.msi ---> https://mega.nz/#!Lxg0kZYY!pQnJZ7HtGT3L6o5i4Q23n4SoFcxLcDMOGig66zOlu6U
For Firmware do search online or p.m me
Click to expand...
Click to collapse
Hello, I have also same model and same issues. My android version is 5.1.1 but i am not able to update it. LG UP is still showing unknow model after all i installed everything step by step.
In LG Electronics folder there is LGUP folder, there is model folder and there are 2 folders. 8974, 8994. in these folders has dll file.
Please help me what to do.

Thank you SOOOOO much for this post!! It helped me a lot to upgrade my refurbished V10 to android 7!!
of course, and after noticing a bit late and a brick later, I realized that for my phone, it's the F600S30d_00_0510 version that works fine!!
now I have an amazing phone with last firmware!!
thank you again!! :highfive: :victory: :victory: :good: :good: :good: :good:

efuzone said:
Hello, I have also same model and same issues. My android version is 5.1.1 but i am not able to update it. LG UP is still showing unknow model after all i installed everything step by step.
In LG Electronics folder there is LGUP folder, there is model folder and there are 2 folders. 8974, 8994. in these folders has dll file.
Please help me what to do.
Click to expand...
Click to collapse
All you need is to carefully install all the software and yes there is no need for DLL file after installing these softwares

hapyfaroq said:
All you need is to carefully install all the software and yes there is no need for DLL file after installing these softwares
Click to expand...
Click to collapse
Hey what if I have a T-Mobile H901 with VS990 motherboard in it? By the sound of things, I would need to flash vs990's kdz. However, wouldn't Tmobile's h901 kdz work as well? I don't understand how your modem and boot screen img(tmobile) wouldn't be affected by flashing f600 kdz to tmobile phone.

AlphaCSxx20 said:
Hey what if I have a T-Mobile H901 with VS990 motherboard in it? By the sound of things, I would need to flash vs990's kdz. However, wouldn't Tmobile's h901 kdz work as well? I don't understand how your modem and boot screen img(tmobile) wouldn't be affected by flashing f600 kdz to tmobile phone.
Click to expand...
Click to collapse
bro as i explained in detail that flashing H901 kdz on phone having different board in it cause it a brick so better to flash such kdz which is compatible with the board.... Be careful double check with your board model. (this is the most important part) Keep that in mind that if you are going to flash some other kdz it will not work and will brick your phone.

i have everything ready but lgup never found the phone as a MODEL.keep saying "unknown model".
i ve checked lg bridge it founds 2 updates (im on 5.1.1) , lgbridge founds both 6 and 7 updates.
i've downloaded the kdz file according to the bridge and and phone provider(tmobile)
but i don't know if i can flash it with LG flashtool besides LGUP.
Because i can not pass "unknown model" issue.

daraza said:
i have everything ready but lgup never found the phone as a MODEL.keep saying "unknown model".
i ve checked lg bridge it founds 2 updates (im on 5.1.1) , lgbridge founds both 6 and 7 updates.
i've downloaded the kdz file according to the bridge and and phone provider(tmobile)
but i don't know if i can flash it with LG flashtool besides LGUP.
Because i can not pass "unknown model" issue.
Click to expand...
Click to collapse
Read the Article carefully it says never update your phone using LG Bridge it will brick your phone, and for kdz please search lg firmware on google and download the relevant kdz as per the model of your Phone's board. Don't waste your time downloading wrong kdz and lg up is hard to setup... keep on searching you will sure find a fix soon. Do a deep google search (as i did) you will figure out what is the problem behind Lg UP

Wassalam Farooq
The issue is that my LG info says its : T-Mobile H901BK
It's on 5.1.1
I have the correct KDZ for Tmobile.
Using a win 10 64 bit OS.
Deep uninstalled all LG soft and drivers
then followed your advises step by step
but still "unknown model"
I need to make first LGup to let find the phone.
I m not sure if i have f600s motherboard.
do you have further advise ?

LG V10 T mobile getting too slow
Salam Bother,
I am new to this and I have joined because of my LG V10 as the mobile was working fine and suddenly it became very slow like if I click on any thing It will take about 2 to 3 seconds before opening and also some times mobile stopped responding and screen became black. I wanted to know if it is a software failure or any thing related to hardware? one thing more phone is turning on and there is no issue with network, wifi, camera even I can use any app on it but very slowly.

daraza said:
Wassalam Farooq
The issue is that my LG info says its : T-Mobile H901BK
It's on 5.1.1
I have the correct KDZ for Tmobile.
Using a win 10 64 bit OS.
Deep uninstalled all LG soft and drivers
then followed your advises step by step
but still "unknown model"
I need to make first LGup to let find the phone.
I m not sure if i have f600s motherboard.
do you have further advise ?
Click to expand...
Click to collapse
Bro first of all you need to confirm your phone board model using Lg info app ... you can find it on playstore for free and for lg up do all as i said above then turn off your phone remove the battery... plug in the usb cable... now install the battery while pressing volume up button it (make sure you lg up software is running) then your phone will directly go into download mode and Lg up will sure recognize your phone model but first of all confirm your phone's board model.

hariszaman said:
Salam Bother,
I am new to this and I have joined because of my LG V10 as the mobile was working fine and suddenly it became very slow like if I click on any thing It will take about 2 to 3 seconds before opening and also some times mobile stopped responding and screen became black. I wanted to know if it is a software failure or any thing related to hardware? one thing more phone is turning on and there is no issue with network, wifi, camera even I can use any app on it but very slowly.
Click to expand...
Click to collapse
Wslam.
Yar ap mjy whatsap py contact kro... will try to help you

i have F600s board
@hapyfaroq bhai i have h901 with f600s board. i updated via lg bridge but it is bricked in Qualcomm 9008 mode. maine kdz file download krli f600s ki. extract bhi karli kdz aur dz. QFIL se karne ki koshish kari thi lekin rawprogram0.xml aur patch.xml nahi mil rhi mujhe yar bhai help karo plzzz

whats your whatsapp num?

SandyKick said:
@hapyfaroq as you mentioned, you have flashed Marshmallow F600S20l_00_0503.kdz !!! and for Nougat you flashed F600L30e_00_0517.kdz !!! which are totally different models. could you please recheck if you typed F600L30e_00_0517.kdz istead of F600S30D_00_0510.kdz
Click to expand...
Click to collapse
did you get it done at any official service center or 3rd party service center?

kingvenkat07 said:
did you get it done at any official service center or 3rd party service center?
Click to expand...
Click to collapse
Done with normal software repair shop here in ameerpet Hyderabad charged 300 rupees

Need help.(solved)

Hello everyone
I am a samsung user from years but i have now lg g3 at&t variant d850 running 6.0 marshmallow never rooted before .
I tried to root this with kingroot kingoroot apk and pc version but can't root.
I saw many posts here says i have to downgrade to kitkat to root and install twrp but my question is if i downgrade and fLAsh kitkat OR LOLLIPOP can i flash cm14 nougat or resurrection remix nougat 7.1.2 on kitkat/lollipop bootloader? In samsung phones the bootloader/baseband should match with the os that i have to flash so how is in the lg Works? Can i flash nougat/marshmallow roms on kitkat/lollipop bootloader/baseband?
I really appreciate if someone can show me some right instructions TIA.
Edit-i downgraded to 4.4.2 kitkat by LGUP and rooted by kingroot app then flashed twrp using flashify and flashed fulmics rom from twrp
Reached the goal

Trex888 said:
Hello everyone
I am a samsung user from years but i have now lg g3 at&t variant d850 running 6.0 marshmallow never rooted before .
I tried to root this with kingroot kingoroot apk and pc version but can't root.
I saw many posts here says i have to downgrade to kitkat to root and install twrp but my question is if i downgrade and fLAsh kitkat OR LOLLIPOP can i flash cm14 nougat or resurrection remix nougat 7.1.2 on kitkat/lollipop bootloader? In samsung phones the bootloader/baseband should match with the os that i have to flash so how is in the lg Works? Can i flash nougat/marshmallow roms on kitkat/lollipop bootloader/baseband?
I really appreciate if someone can show me some right instructions TIA.
Edit-i downgraded to 4.4.2 kitkat by LGUP and rooted by kingroot app then flashed twrp using flashify and flashed fulmics rom from twrp
Reached the goal
Click to expand...
Click to collapse
Good to see you here man
IMO fulmics was one of the best roms for G3 if you got any probs let me know

TheMadScientist said:
Good to see you here man
IMO fulmics was one of the best roms for G3 if you got any probs let me know
Click to expand...
Click to collapse
fulmics is the best rom for g3 IMO i am using from last 2 months and no issues whatsoever infact in terms of sound quality & performance this rom is amazing..actually my g3 became better then my friends g5 software wise.
BTW i have a h811 tmobile lg g4 hard bricked i flashed lower version of kdz and it got bricked no download mode no recovery.
i believe it was running 21y software and i flashed 20v and i did almost all methods to unbrick this thing but no luck until now ,
i tried microsd card method but still no download mode
qpst qfil method with firehose and raw program files for h811 but it fails such as device is not in firehose mode and sahara fail .at this point i fed up and not trying and thing else.
i really appreciate if you help me to unbrick this thing.
thank you.

Trex888 said:
fulmics is the best rom for g3 IMO i am using from last 2 months and no issues whatsoever infact in terms of sound quality & performance this rom is amazing..actually my g3 became better then my friends g5 software wise.
BTW i have a h811 tmobile lg g4 hard bricked i flashed lower version of kdz and it got bricked no download mode no recovery.
i believe it was running 21y software and i flashed 20v and i did almost all methods to unbrick this thing but no luck until now ,
i tried microsd card method but still no download mode
qpst qfil method with firehose and raw program files for h811 but it fails such as device is not in firehose mode and sahara fail .at this point i fed up and not trying and thing else.
i really appreciate if you help me to unbrick this thing.
thank you.
Click to expand...
Click to collapse
There is a man stedfasterx. He is the unhardbrick master. I know it involves turn8ng it to a ls991 permently sprint g4.
One thing I never did was hard brick a G4 lol. Did g2 g3. And g5
I noticed u say still no dl mode does that mean revocery and such is working.

TheMadScientist said:
There is a man stedfasterx. He is the unhardbrick master. I know it involves turn8ng it to a ls991 permently sprint g4.
One thing I never did was hard brick a G4 lol. Did g2 g3. And g5
I noticed u say still no dl mode does that mean revocery and such is working.
Click to expand...
Click to collapse
thanks for reply
unfortunately no dl mode no recovery no signs of life at all after flashing lower 20v kdz.

Trex888 said:
thanks for reply
unfortunately no dl mode no recovery no signs of life at all after flashing lower 20v kdz.
Click to expand...
Click to collapse
He can fix most of them I think but it converts to a ls991 Permanently

TheMadScientist said:
He can fix most of them I think but it converts to a ls991 Permanently
Click to expand...
Click to collapse
ya man i pm stedfasterx just now and i explained him the hard bricked condition of my g4 hopefully he will reply back and help me out. fingers crossed
thanks for reply and have a good day sir:good: