Install Android 6.0 Marshmallow on T-Mobile LG G3 D851 via XenonHD ROM


T-Mobile LG G3 D851 is now going to taste another Android 6.0 Marshmallow ROM via TeamHorizon XenonHD. XDA dev dadi11 has posted about the compatibility of Marshmallow ROM for various LG G3 variants. The Android 6.0 Marshmallow ROM for LG G3 is just another improved update after unofficial CM13 ROM released last month, if you wish to install the ROM on your device you can now easily download and install the Android 6.0 Marshmallow via XenonHD custom ROM by following our guide below. We have already posted guides on other devices using the same process and now we are repeating the process for T-Mobile LG G3 D851.

There are multiple benefits of installing custom ROM on your T-Mobile LG G3 D851 as it provides a wide range of customizations and limitless modifications which unfortunately you can’t find in the stock firmware. Some custom ROMs gives you freedom to overclock CPU, install tweaking mods and tons of other software to enhance device performance further you can install themes to customize the device look. Just go ahead and install the Android 6.0 Marshmallow on T-Mobile LG G3 D851.

Note: The Android 6.0 Marshmallow ROM for T-Mobile LG G3 D851 is currently in the testing stages and you may notice some bugs. This not an official update from manufacturer but it’s a custom ROM from third party developers so check twice before installing Android 6.0 Marshmallow via AOSP on your T-Mobile LG G3 D851.

How to install Android 6.0 Marshmallow on T-Mobile LG G3 D851 with XenonHD custom ROM

Before you Begin:

Disclaimer: This tutorial includes multiple operations including Custom Rom, custom recovery etc. 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 LG USB drivers
  • Your device should have a working TWRP installed on your device

Necessary downloads:

Process to install Android 6.0 Marshmallow on T-Mobile LG G3 D851

Connect your device to your PC and copy the both ROM and Google apps zip files onto your device storage.

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

Once your device enters into TWRP 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, tap on “Wipe” and then swipe the slider from left to right to begin the wipe process (This will reset your device to factory)

Now it’s the time to flash the Marshmallow firmware on your device. Choose install and navigate to the folder in which you have copied the Marshmallow ROM zip file

Swipe across the slider 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 GApps.

Wait for the installation process to complete.

Once completed Reboot your device.

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

That’s it! Android 6.0 Marshmallow via XenonHD custom ROM is successfully installed on your T-Mobile LG G3 D851. 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.

1 Comment
  1. Reply
    Oscar February 2, 2016 at 2:44 pm

    Hi. Does it works with AT&T LG G3 D850? Thanks.

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