Last Updated on January 5, 2023 by Mathew Diekhake

The most popular LG smartphone in the G3 series comes with the model number D855, and now you can root the same thanks to updated SuperSU application and a custom recovery. The updated method works after you update the G3 to Android 6.0 Marshmallow by accepting the OTA notification, or by installing the file manually using the Flash Tool.

Here is everything you need to root the LG G3 D855 running Android 6.0 Marshmallow.

Related Reading: Best Custom ROMs For The LG G3 Smartphone

LG-G3

Files You Need

  1. You must have a custom recovery installed on the LG G3 D855 smartphone before you can think about following this guide.
  2. You are voiding the warranty by LG when you choose to root the G3 by following this guide. You can unroot by opening your SuperSU app, or by flashing the stock ROM back on the device later. The stock ROM should also flash the stock G3 recovery which you need to wipe the custom recovery and get the warranty working again.

Rooting the LG G3 D855 running Android 6.0 Marshmallow

  1. Download the SuperSU for the G3 from the Chainfire website from this page.
  2. Connect your LG G3 handset to the computer where you have the SuperSU app waiting.
  3. Transfer the SuperSU over to the root of the G3 internal storage SD card.
  4. Learn how to boot the LG G3 in the custom recovery mode you installed earlier using the hardware keys, or by installing the Quick Boot app from the Google Play Store. You can find the instructions for both from the link.
  5. Once you have your LG G3 booted in the custom recovery mode, tap the Install option from the main recovery menu. The wording will vary depending on what version of custom recovery you have installed. However, both start with the word ‘Install’.
  6. Browse the SD card for your updated SuperSU app you shifted over to the SD card earlier.
  7. Confirm you want to install the SuperSU application from your SD card by following the on-screen instructions on how to get that done.
  8. Once flashed, go back to the main custom recovery menu on your G3 and choose the ‘reboot System’ option.
  9. The LG G3 D855 smartphone will now reboot back in normal mode and you can start using your rooted device.
  10. Open the Google Play Store application from your homescreen or app drawer and install the root checker app. Open the root checker app from your device and follow any on-screen instructions if it asks to grant Superuser access.

Since you just rooted the G3 smartphone using the SuperSU app, you obviously do not need to install the SuperSU app — you should find it on your device. The SU will keep your device safe and clean from any malware, so long as you do not grant malware access to the root file system.