[STOCK][CROSSFLASH][GUIDE] How to install Stock Rom (or crossflash) using LG UP

[LameMonster82]

This is a guide on how to install Stock Rom or Crossflash on any LG G7 ThinQ
(Except for G710TM and G710V)


Please read everything written down and on the second post before asking questions!​

Before we do anything i have to explain some stuff:

• I am not responsible for any damages that may occur during the installation or after it. I dont have every G7 on the world to test it so something unexpected can happen. Still if something is not clear ask here for help.
• Stock roms should work on almost every model (G710TM (Anything related to T-Mobile) models are not supported)
  Note: for models from ATT, Cricket, Sprint, BoostMobile, VirginMobile, AIO and Tracfone wont be able to go back to their stock firmware because ther is no KDZ or Dump available. Note2: It's not recommended to flash ANY Stock rom to G710V. You may not be able to complete the startup setup.
• Some features may or may not work:
  • VoLTE/VoWIFI
  • Loss of Serial Number
  • Widevine will downgrade to L3 (No Netflix HD)
  • SafetyNet Issues

Join our Telegram Group here:
>> {Mod edit! Oswald Boelcke, Senior Moderator} <<

Let's Begin​

Step 0:Make sure that you have read everything that was written above. Also please uninstall any previous version of LGUP if presented.

BACKUP BEFORE DOING ANYTHING!!!​

Step 1:Everything that you need:

• https://drive.google.com/open?id=18i2WZksRjcrvg-KQjaHuzInd7_sbRBvq (USB Drivers)
• https://drive.google.com/open?id=1dJZxrj7nteDDUcQpiJLpX9Mjumm5mtKp (LGUP 1.15.06)
• https://drive.google.com/open?id=1V8IF2vJed3bQBsBCHLNBJdnW4gRj2uo0 (LGUP_Common/ LGUP dll)
• https://lg-firmwares.com/ (KDZ Files if you dont have any) (Ignore the G710TM KDZs)

Step 2:After downloading everything install:

• The USB Drivers (LGMobileDriver_WHQL_Ver_4.2.0.exe)
• Then LGUP (LGUP_Dev_Frame_Ver_1_15_0_6.msi)
• 
  Step 3:Turn off your phone and then:
  • Hold volume up
  • Plug your USB Cable to your phone while holding volume up (The usb must be connected to your pc)!
• Now the phone should look like this.
  

  

  Step 4:Open the device manager
  • There will be a tab with the name "Ports"
  • Open it and it shoud look lime this.
• 
  
  
  
  
  Note:If you dont see it or there is a problem with is. please try reinstalling the drivers from before.
  • At the end it should say COMX.
  • Remember that number. We will need it in the next step.
• 
  Step 5:Time to install pie!
  • Go to

    C:\Program Files (x86)\LG Electronics\LGUP

  • Extract the "common" folder from LGUP dll (LGUP_Common.zip) inside the folder "model".
  • Then go back to C:\Program Files (x86)\LG Electronics\LGUP (if you're not already there)
  • Hold the shift key and right click on a free space.
  • Choose to open a command prompt.
• Note:If you're on windows 10 it will be called a PowerShell. After oppening it type cmd and hit enter.
  • After that type

    lgup_cmd.exe com[B]X[/B] "C:\Program Files (x86)\LG Electronics\LGUP\model\common\LGUP_Common.dll" [KDZ Loctation]

  • X = Your number from step 4 (e.g. com3)
  • [KDZ Location] = Your full path to your KDZ File (G710_Something_something.kdz)

After that the phone should start being flashed and after a bit it should boot into your new Stock Rom​

Feel free to ask questions!
Credit and a lot of thanks to:​

• @Sellerie_ for his amazing help with TWRP and custom system overlay for the G7
• @J0SH1X for getting AOSP to work on oreo and pie firmware and also his awesome work on TWRP

 

[LameMonster82]

Nothing to see here​

 

[xeizo]

Best guide so far! Thanks a lot!

 

[tweteks]

God bless You man!

 

[oliake]

Nice work!! How is camera working on AOSP? Wide angle working?

 

[LameMonster82]

Nice work!! How is camera working on AOSP? Wide angle working?

Works great with the lastes apk from Arnova

 

[oliake]

Works great with the lastes apk from Arnova

Cool, thanks! Another question, i'm trying to flash korean version of pie but when I try to flash it, It looks like this. And yes I chose the right port which is 4 in my case but it still says ''COM0''
Do you know how to fix this? Thanks!

Selected Port : COM0
SW Version :
Model Name :
Can't get device SW version
Download Error

 

[LameMonster82]

Cool, thanks! Another question, i'm trying to flash korean version of pie but when I try to flash it, It looks like this. And yes I chose the right port which is 4 in my case but it still says ''COM0''
Do you know how to fix this? Thanks!

Selected Port : COM0
SW Version :
Model Name :
Can't get device SW version
Download Error

It seems that you didnt extract the zip correctly.

 

[tweteks]

Guys I got error "[SW PATH] is null"

after lgup_cmd.exe com5 (in my case) C:\Program Files (x86)\LG Electronics\LGUP\model\common\LGUP_Common.dll C:\Program Files (x86)\LG Electronics\LGUP\model\common\G710N20c_00_LGU_KR_OP_0107.kdz

 

[LameMonster82]

Guys I got error "[SW PATH] is null"

after lgup_cmd.exe com5 (in my case) C:\Program Files (x86)\LG Electronics\LGUP\model\common\LGUP_Common.dll C:\Program Files (x86)\LG Electronics\LGUP\model\common\G710N20c_00_LGU_KR_OP_0107.kdz

By kdz location i mean where you downloaded your kdz.
Also i forgot to add quotes for the path so i guess thank you for showing it to me
In your case the command should be:

 lgup_cmd.exe com5 "C:\Program Files (x86)\LG Electronics\LGUP\model\common\LGUP_Common.dll" [KDZ Path like your download folder or the place where you downloaded the kdz file]

For example

lgup_cmd.exe com5 "C:\Program Files (x86)\LG Electronics\LGUP\model\common\LGUP_Common.dll" "D:\MyFiles\Desktop\LG G7 Files\G710NO20c_00_OPEN_KR_OP_0107.kdz"

 

[oliake]

It seems that you didnt extract the zip correctly.

Problem was with the DLL like you said, but it was that Powershell wouldn't find it so in the command where it says model\common\LGUP_Common.dll, I erased LGUP_Common.dll from the code and manually drag the DLL file from the folder and drop it into code instead, if you understand what I mean! So the code would look something like this instead lgup_cmd.exe comX "C:\Program Files (x86)\LG Electronics\LGUP\model\common"C:\Program Files (x86)\LG Electronics\LGUP\model\LGUP_Common.dll" and that worked and now I have pie installed on my phone!

Thank you so much for the tutorial, it was so easy to follow!

 

[tweteks]

Next problem LameMonster82

C:\platform-tools>fastboot --set-active=a flash boot_a TWRP_RealPie.img
Sending 'boot_a' (65536 KB) OKAY [ 1.682s]
Writing 'boot_a' OKAY [ 0.360s]
Setting current slot to 'a' OKAY [ 0.016s]
Finished. Total time: 2.262s

C:\platform-tools>fastboot --disable-verity --disable-verification flash vbmeta_
a
unknown partition 'vbmeta_a'
fastboot: error: cannot determine image filename for 'vbmeta_a'

 

[LameMonster82]

Next problem LameMonster82

C:\platform-tools>fastboot --set-active=a flash boot_a TWRP_RealPie.img
Sending 'boot_a' (65536 KB) OKAY [ 1.682s]
Writing 'boot_a' OKAY [ 0.360s]
Setting current slot to 'a' OKAY [ 0.016s]
Finished. Total time: 2.262s

C:\platform-tools>fastboot --disable-verity --disable-verification flash vbmeta_
a
unknown partition 'vbmeta_a'
fastboot: error: cannot determine image filename for 'vbmeta_a'

You forgot to put vbmeta_a.img full path at the end
Example:

fastboot --disable-verity --disable-verification flash vbmeta_a[B] "D:\MyFiles\Desktop\LG G7 Files\vbmeta_a.img"[/B]

 

[tweteks]

Guys I got same bug on HavocOS, Resurrection Remix n Pixel Dust - led notificator always blinking (light blue color)
Any ideas to solve the problem?
Anybody else got same?

Options to disable LED inside ROMs isnt working.
Start blinking with ROM's logo show up.

 

[LameMonster82]

Guys I got same bug on HavocOS, Resurrection Remix n Pixel Dust - led notificator always blinking (light blue color)
Any ideas to solve the problem?
Anybody else got same?

Options to disable LED inside ROMs isnt working.
Start blinking with ROM's logo show up.

As I said it's a bug in AOSP that is ultra hard to fix. You just have to deal with it

 

[MP39]

Can i flash pie on my branded g7?
(Sorry for the silly question, but i've never flashed a phone ?)

 

[LameMonster82]

Can i flash pie on my branded g7?
(Sorry for the silly question, but i've never flashed a phone ?)

As I said most models work

 

[Inerent]

Hello! Does this work with LG g7 plus 6gb dual sim eaw modell?

 

[LameMonster82]

Hello! Does this work with LG g7 plus 6gb dual sim eaw modell?

You can try reading the thread but yeah it does

 

[Inerent]

---------- Post added at 07:55 PM ---------- Previous post was at 07:51 PM ----------

You can try reading the thread but yeah it does

1. I have read the thread, but I'm a little suspicious. I just don't want to break my imei, partitions or important things.
2. Is your method different than flashing a firmware with lgup, or the power shell command does something else than normal flashing with lgup?
Thx for your tutorial.
P. S. I want to go for the stock Korean firmware but as I said I am afraid of breaking things like repartitioning the storage, loosing imei and efs folder, serial numbers, drm keys etc. I'm also on dualism, will that work?