Guide To Update Stock Android 6.0 Marshmallow On LG G4 Using H815 20A KDZ File.

Guide To Update Stock Android 6.0 Marshmallow On LG G4 Using H815 20A KDZ File.


Update Stock Android 6.0 Marshmallow On LG G4. LG G4 is the android smartphone which announced in April 2015, and exactly released on 2015, April. Guidebelajar on this guide will explain to you how to flashing android device on LG G4   with easy and simple stepFlashing in android is the same way like fresh install on the windows PC, So by perform a flash on Android you will give a new performance like a new phone. One reason that you should perform a flash your android is because your android get bootloop or when you failed to install Stock ROM Mod. 

This LG G4 is the smartphone with 5,5 Inchi wide LCD, work on Android OS, v5.1 (Lollipop), and supported with Quad-core 1.44 GHz Cortex-A53 Cortex-A57 CPU, Qualcomm MSM8992 Snapdragon 808 Chipset, combined with 3 GB of RAM and 16 MP of  Main camera and 8 MP on secondary camera. 









Attention : This guide for experiment purpose only, actually has not been tested before. And may LG Flash Tool not support the Android 6.0 marshmallow KDZ latest build. The other problem when you perform this update on your LG G4 is your bootloader will be locked and you may not be able to downgrade or root your device as the bootloader unlock method is unavailable for v20A firmware.

What You Need ?

  1. Make sure you have the latest LG drivers installed on your computer. Get it 
  2. http://click.xda-developers.com/api/click?format=go&jsonp=vglnk_144651256212410&key=f0a7f91912ae2b52e0700f73990eb321&libId=igio4xmg01000n4o000DA4nswvlb0&loc=http%3A%2F%2Fforum.xda-developers.com%2Fshowthread.php%3Ft%3D2797190&v=1&out=https%3A%2F%2Fwww.androidfilehost.com%2F%3Ffid%3D24052804347802528&ref=https%3A%2F%2Fwww.google.co.id%2F&title=LG%20Flash%20Tool%202014%20-%20The%20best%20way%20to%20Flash%20L%E2%80%A6%20%7C%20LG%20G2%20%7C%20XDA%20Forums&txt=https%3A%2F%2Fwww.androidfilehost.com%2F%3Ffid%3D24052804347802528
  3. Make sure you have latest LG FlashTool :  
  4. http://click.xda-developers.com/api/click?format=go&jsonp=vglnk_14465125477179&key=f0a7f91912ae2b52e0700f73990eb321&libId=igio4xmg01000n4o000DA4nswvlb0&loc=http%3A%2F%2Fforum.xda-developers.com%2Fshowthread.php%3Ft%3D2797190&v=1&out=http%3A%2F%2Fwww.mediafire.com%2Fdownload%2Ffwrcd3pdj0svjtb%2FLG_Flash_Tool_2014.zip&ref=https%3A%2F%2Fwww.google.co.id%2F&title=LG%20Flash%20Tool%202014%20-%20The%20best%20way%20to%20Flash%20L%E2%80%A6%20%7C%20LG%20G2%20%7C%20XDA%20Forums&txt=http%3A%2F%2Fwww.mediafire.com%2Fdownload%2Ffw..._Tool_2014.zip
  5. Then, Extract and Install the LG Flash Tool 2014 on your computer. LG Flash Tool 2014 is required in order to flash the KDZ file onto your LG G4.
  6. If you have any problems installing or running the Flash Tool then install the Visual C++ Runtime libraries on your Windows PC. Get it 
  7. https://googledrive.com/host/0B9l4QOCXUmxXV19jN1ZrTnBwdTQ/VC_RedistInstaller.exe
  8. Download the LG G4 Firmware  (Marshmallow H81520A_00.kdz )
    •  from Here
    • https://www.androidfilehost.com/?fid=24052804347845226

    • or.
    • http://csmgdl.lgmobile.com/dn/downloader.dev?fileKey=FW1F33M2328CAJLC9D894FS/H81520A_00.kdz
  9. This Android 6.0 Marshmallow KDZ firmware is compatible with only the international variant of LG G4 with model number H815.
  10. Always perform backup your important data before flashing process, Cause this process will delete or erase the data in memory. To backup your SMS file you can see this guide

Guide To Update Stock Android 6.0 Marshmallow On LG G4.

Read this step carefully to update your LG G4 with  Android 6.0 Marshmallow Stock.
  1. Make sure you have download all requirement tool above.
  2. Then Install the drivers with your phone connected with your Computer, when it finished disconnect your LG G4 phone from your computer.
  3. Now turn your LG G4 phone off, then click continuously on the up volume and connect your phone to your computer, 
  4. Now enter your LG G4 into download mode.   ( visit this guide )
  5. Run LGFlashTool2014.exe.
  6. There are two options to flash your LG G4.

    • Normal Flash : You can select this option if you want Flash ROM without losing any data. Only use this when you need to fix system error.
    • CSE Flash : You can choose this option when you need a fresh format. All data will be deleted. It's suitable for upgrading or downgrading ROM or simply use this when you need to back to Stock. 
    • LG flash tool normal flash / CSE flash
      LG flash tool normal flash / CSE flash
  7. Select Type: CDMA
  8. PhoneMode: DIAG
  9. Select KDZ file : browse your KDZ file in your drive
  10. Then you can Click on Normal Flash or CSE Flash (see step 6 to decide this option), On this guide we recommended that you select CSE Flash.
  11. Then click Start.
    LG flash tool - start
    LG flash tool - start
  12. Then click on Clear Phone Software update registry.
    Lg flash tool - Clear Phone Software update registry.
    Lg flash tool - Clear Phone Software update registry.
  13. No need to choose desired language, it automatically change to English as a default setting.
  14. Finally you can click OK.
  15. Once the program has started, the stock firmware will get installed.
    LG Flash tool - flashing process
    LG Flash tool - flashing process
  16. If your process interrupted and error occurred, retry from Step 1 until success and remember to disconnect from internet when necessary. 
  17. You must wait a minute for the LG Mobile Support tool to recognize the LG G4 device.
  18. When you wait this process, may take 5 minute the tool to recognize it.
  19. The software will start the extraction on your device.
  20. When the process reach 100% your LG G4 will reboot.
  21. Then, you must Unplug your LG G4 from your computer by remove USB Cable from it.,
  22. Once you boot into stock firmware on your LG G4, you can enjoy your latest Android 6.0 Marshmallow software.
  23. Finish,

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