Install Stock Android 6.0 Marshmallow on T-Mobile LG G4 H811 [Ported from 20A]



In this guide we are going to install Stock Android 6.0 Marshmallow on T-Mobile LG G4 H811 using TWRP custom recovery. The Android 6.0 Marshmallow 20A for LG G4 H815 is already released and we have posted guides on the both firmware installation process including KDZ and the recovery flashable. But the stock Android 6.0 Marshmallow for T-Mobile LG G4 is not released yet, so a developer at XDA has modifies the LG G4 H815’s 20A firmware and make it compatible to port it on LG G4 H811.

The ROM is fully stock and unrooted only the modification made by the developer is to set it’s compatibility for T-Mobile LG G4 H811. So we have posted below complete tutorial to install Stock Android 6.0 Marshmallow on T-Mobile LG G4 H811 using TWRP recovery. You can also revert back to Android Lollipop if you wish to do so.

How to install Stock Marshmallow update on LG G4 using TWRP custom recovery

Before you Begin:

Disclaimer: This tutorial includes multiple operations including Custom Rom, Custom recovery and root. 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.


Process to install Stock Marshmallow update on T-Mobile LG G4 H811

Connect your device to PC via USB cable and copy the above downloaded Marshmallow zip file on your device storage.

Now disconnect your device and turn it off completely.

Boot into TWRP custom recovery mode by using 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.

Now select the and swipe across the slider to confirm install.

Wait for a few minutes till the file is completely installed in your device (The installation will take some time so be patient)

Once you fully done with installation process, just 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! You have successfully installed Stock Android 6.0 Marshmallow ported update on T-Mobile LG G4 H811. 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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