LG mobile released Android 6.0 Marshmallow update for the LG G4 android smartphone and the build number of the new update is 20A (H815 20A). If you are the LG G4 (H815) user then you will get this OTA update very soon on your phone. But if you have the rooted phone with TWRP recovery then there is now chance to get this update and you have flashed it manually to update your LG G4 with this new Android 6 Marshmallow update. XDA member autoprime has released the official flashable KDZ for Marshmallow for LG G4 phones with model number H815. If you are rooted user then you can apply this updated on your with the help of TWRP recovery. So today here in this tutorial we’ll show you how to flash this update on the LG G4 and how to get the root access on the phone.
To get started, you need a rooted phone with TWRP recovery. To install the TWRP recovery on your LG G4 check this guide. Read all the instruction very carefully and don’t apply this method on any of other android smartphones. This guide is only fo the LG G4 model no. H815.
Update LG G4 to Android 6 Marshmallow
Step 1. Download the below mention 4 file on your LG G4 phone.
- System — Link | File: LG-H81520A-Flashable.System.zip (1.33 GB)
- Modem — Link | File: LG-H81520A-Flashable.Modem.zip (39.31 MB)
- Boot — Link | File: LG-H81520A-Flashable.Boot.zip (13.08 MB)
- Bootloader — Link | File: LG-H81520A-Flashable.Bootloader.zip (35.43 MB)
Step 2. Boot your LG G4 into recovery mode.
Step 3. Once your phone in recovery mode. Create a backup of your device with the BACKUP option.
Step 4. Now do a Factory Reset. Go back on TWRP’s main screen, tap on Wipe, and then do the Swipe action bottom to confirm it.
Step 5. Now tap on Install, and then locate the system file (LG-H81520A-Flashable.System.zip) and tap on it. This will flash the system zip file on your phone.
Step 6. After his flash the LG-H81520A-Flashable.Boot.zip file and after that rest of the two files on your phone.
Step 7. Once you have flashed everything, reboot your phone. The first boot will take some time to apply the Marshmallow update on you phone.
Root LG G4 on Android 6 Marshmallow
Step 1. Download the custom kernel with SuperSU here and move the zip file on your phone.
Step 2. Boot your LG G4 into custom recovery mode.
Step 3. Now, install the kernel file. Go to ‘Install’, select the modified kernel and swipe to flash the file.
Now reboot your phone. The SuperSU app will be available from the app drawer. Now your LG G4 is rooted on Android 6 Marshmallow.