Install Stock Android 6.0 Marshmallow 30B KDZ on LG G3


In this guide you will be able to install Android 6.0 Marshmallow 30B firmware KDZ on LG G3 D855. The Official Android 6.0 Marshmallow for LG G3 is released as promised by LG and now you can easily install the stock 30B firmware on LG G3 by following our guide below. In this tutorial we have mentioned 2 methods to install the Stock Marshmallow 30B firmware on LG G3 for your ease, the first one is the official LG flashtool method and the second one is the TWRP recovery method.

First we will try the LG Flashtool method to install the official Android 6.0 Marshmallow 30B stock firmware KDZ on LG G3 D855.

Download Stock Android 6.0 Marshmallow 30B firmware KDZ for LG G3.

Now Follow this guide and select the downloaded 30B firmware KDZ this time.

How to install Stock 30B firmware KDZ on LG G3 D855 via TWRP custom recovery

Disclaimer: This tutorial includes multiple operations which includes, installing Custom ROMs and stock ROMs. Follow the guide on your own risk, we are not responsible if you brick or damage your device however the chances of bricking a device are rare but you have to pay full attention on the complete guide to avoid any issues and difficulties while performing any of the above mentioned operation.


Please ensure your phone battery should be charged at minimum 80%

Download and install latest USB drivers

Your device should have a working CWM or TWRP recovery installed.

Download Android 6.0 Marshmallow 30B KDZ for LG G3 D855 from the below provided links

Download Stock Android 6.0 Marshmallow 30B

Download Stock Android 6.0 Marshmallow 30B

Download Stock Android 6.0 Marshmallow 30B

Download Sharpening Mod

Process to install 30B firmware KDZ on LG G3 D855

Connect your device to PC and copy all the four downloaded files on your device storage.

Now Turn of your device and boot into CWM custom Recovery menu by the hardware keys combination or using any third party app (Mostly found in Play store).

Once your device enters into CWM recovery, create a Nandroid backup of your device or follow our guide to create a Nandroid backup (this will create a backup of your complete device including current firmware) if something goes wrong you can restore your previous firmware.

Once the Nandroid process completes, navigate and select wipe data/factory reset.(this will erase your data)

Now it’s the time to flash the Stock Marshmallow firmware on your device. Choose “install zip from sdcard” >> choose zip from sdcard & navigate to the folder where you have copied the Marshmallow file and select it.

Select “yes” to confirm install, wait for a few minutes till the file is completely installed in your device.

Once done with the above step, now apply the same process with the installation of remaining three files but remember don’t perform wipe every time.

Wait for the installation process to complete. The first boot up may take 5-7 minutes.

If your device is taking longer then 7-10 minutes then follow this guide to to fix this issue 

Also read: How to Root LG G3 on Android 6.0 Marshmallow 30B firmware

That’s it! You have successfully installed Android 6.0 Marshmallow 30B firmware KDZ on LG G3 D855. If you have any query feel free to contact us by posting your queries in the below provided comment section. Follow us on Facebook/Twitter/Google+ for future update.

A Software Engineer who loves to hang around latest gadgets and writes his own experiences to get the best possible and accurate information.

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