How To Flash Stock Firmware on LG G4 With LG UP Software. 

Flash Stock ROM on LG G4. This is some versions of LG G4, US991 (US Cellular), H815P (LATAM, South Africa), H812 (Canada), H815TR (Turkey), H810 (AT&T), H811 (T-Mobile), LS991 (Sprint), H815T (Hong Kong), VS986 (Verizon), H815 (EMEA). Now we will show you how to flash LG G4 using a new official tool from LG, this tool is called LG UP software. LG UP is like LG Flash tool,  You can use this tool upgrade your LG G4 device, or fix a boot loop / bricked on Android LG G4. 

This LG G4 is the smartphone with 5,5 Inchi wide IPS LCD capacitive touchscreen, 16M colors, work on Android OS, v5.1.1 (Lollipop), upgradable to v6.0 (Marshmallow), and supported with Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A57) CPU, Qualcomm MSM8992 Snapdragon 808 Chipset, Adreno 418 GPU, combined with 3 GB of RAM and 16 MP of Main camera and 8 MP on secondary camera. And this device Released 2015, April.

Here, is full instruction guide to flash LG G4.

Download Firmware For LG G4.

Download all firmware and tools below;

1. Download Stock Rom LG G4: From Here, 
2. If you can not find the KDZ file from the link above, you can try to download the KDZ by yourself.
• Download KDZ file for all LG smartphone device. 
3. Or, go to the direct link below.
• Here 
4.  Download LG mobile support tool and install. 
5. Download Driver LG (Ver. 4.0) : 
6. Download Verizon LG phones USB Driver. 
7. Latest LG UP: .
8. Download LG UP DLL file, select the file support with your device.
• LGUP_8994_DLL_Ver_0_0_3_23.msi (This is for LG phones based on Qualcomm Snapdragon 810 MSM8994 SoC). 
• LGUP_8974_DLL_Ver_0_5.MSI (This is for LG phones based on Qualcomm Snapdragon 800 MSM8974 SoC). 

Guide To Flash LG G4 (LG UP)

Some method flash LG device using LG Flash Tool 2014, but on this guide, we will show you flash LG device using LG UP, This is the new official tool from LG to flash LG G4 device.

1. Download firmware or stock ROM on item no 1 or 2 or 3 above, save it to your computer drive. I save all file above in C:\LG folder.
2. Then, install all file one by one.
• First, you must Install USB Driver
• Then, Install the latest LG UP software (this software run on most windows operating system versions)
• At last, Install LG DLL file that supports with your LG G4 smartphone.
3. Once all file successfully installed on your computer, Then put your LG G4 Smartphone into download mode, you can manually do it by;
• Turn Off your LG G4 Smartphone device.
• Then press and hold Volume UP button while connect your LG G4 Smartphone to the computer using USB cable.
4. Then run LG UP software.
5. Wait a moment until LG UP detect and recognize your LG G4 smartphone. This will install a necessary USB Drivers for your device.
6. Now, your LG UP should show up on your computer screen.

   

   LG UP - flash lg G4

7. From LG UP screen above, go to process tab and select Upgrade. (1)
8. For the next step, see this guide.