Download Required Files


Download G4 H811 Marshmallow KDZ




Download LGUP Tool


Update T-Mobile LG G4 H811 to Marshmallow, Steps


Follow the steps below to manually update your T-Mobile LG G4 H811 to stock marshmallow OS.


Step-1


Download the Marshmallow KDZ file for your G4. Open the download link above and download the file on the fourth number which is H81120i_00_0201.kdz.
Download the LGUP tool and extract it.
Step-2


After extracting LGUP tool you will get two files. Install the DLL file first and then LGUP file on your PC.
Step-3


Now launch the LGUP tool on your PC.
Step-4


After that connect your LG G4 H811 to the PC. LGUP will detect your phone and it will be listed on the LGUP tool screen like in the picture below.
Connect LG G4 to LGUP





Step-5


Now click on the upgrade option in LGUP and choose file path. Select the Marshmallow kdz file that you downloaded in the first step.
There are different options in the process section below. If you choose the Refurbish option, your phone will undergo a full factory installation and all the data will be erased. If you choose the Upgrade option then your data will not be erased and the phone will be updated.
Step-6


After you have done all the above steps. Click on the Start button to update T-Mobile LG G4 to Marshmallow and wait for sometime till the process completes. Leave the phone free while it is upgrading. When it completes your device will reboot automatically. You can then unplug your cable.