How to Unroot the LG Optimus L3 E400

Installing root-only apps and custom ROMs may result in brick of the device sometimes. You don’t even have the valid warranty of the device, so no chances of taking it back to the service center. In this case, unrooting the device can help you as it restores the warranty of the device and you can then take it to the service center. If such thing has happened with your LG Optimus L3 E400 smartphone, you can follow our unrooting guide below. It’ll unroot the device as well as reinstate the warranty, let’s get started.

I. Before You Begin:

1. You should have rooted your device using the procedure given here.

2. Make sure your device’s charged and has at least 60% of battery life left.

II. Downloading Required Files:

1. GingerBreak APK (It’s attached in the first post)

III. Unrooting the LG Optimus L3 E400:

1. Place the APK file you just downloaded to your Desktop.

2. Connect your device to your PC using the USB cable.

3. Copy the APK file over to the root of your SD card.

4. Disconnect the device after the file has been copied.

5. Turn ON the USB debugging option by going to Menu>>Settings>>Applications>>Development>>USB debugging.

6. Turn ON the Unknown sources option as well from Menu>>Settings>>Security>>Unknown sources.

7. Open the File Manager on your device and tap on the APK file to install it.

8. Once it’s installed, launch it from Menu.

9. Hit Unroot button in the app and let it unroot the device.

10. It should take some time to unroot the device.

11. Once it’s done, reboot the device.

12. You’re all done!

Great! Your device has been restored to its factory state and all the SU binaries have been removed from the device. It’s now as original as it was when you took it out of the box!

If this procedure helped you please thank/donate to the original developers here.

If you need help with this procedure, please ask in the comments below or in the forum.

This is part of our Android How To’s. We have how to’s on rooting, loading ROMs, and tons of other tips and tricks for your specific device or for Android devices in general! For all of our Android How To’s, head here.

If this procedure helped you, please consider donating to the original developer or at least sending them a thank you.

Now that you are rooted, head here to learn some of the fun things you can do!

For all the devices we have rooting procedures for, head here.


Something Wrong? If you notice an issue with the procedure (broken link, steps out of date, etc.), use this form to let us know! Otherwise, if you just are having trouble with the procedure, reach out to us on Twitter, Facebook, or Google+.

  • Sonem

    thank you it works
    gracias me funciono demaciado no sabes como quitar el recovery?

    • Mahesh Makvana

      Great! We’re glad it worked for you!

  • Erick

    this works to LG L9???

    • Mahesh Makvana

      Nop, it works for the LG L3 model only.

      Thanks!

  • Pierre

    Thanks a lot!!! :D

    • Mahesh Makvana

      You’re welcome Pierre!

  • gabriel

    thanks so much brother i’m brazilian

    • Mahesh Makvana

      You’re welcome!

  • defri

    how to instal that, there is no apk file

    • Mahesh Makvana

      Grab the APK using the link given in the Section-II.

  • Pedro

    Through this tutorial, zeroed the binary counter as well?

    For the tutorial, installing gingerbreak 1.2, works fine, now I can send it in for warranty your tutorial says . withdrew all binary SU?

    I am Brazilian, Portuguese excuse bad

  • dale

    there is no apk file :((

    • Mahesh Makvana

      Click on the link given in the Section-II and you should be able to download the APK file.

      Hope it helps!

  • ami

    It’s a viurs : what to do now i just wanted to root my phone but i can’t link2fs gives me Mount : device or resource busy
    and i can’t solve this problem so i wan’t to get my phone back please help me

  • Rohan Ronnie Bhattacharjee

    I installed ROM Manager in my E400 and then downloaded the Cyanogen Mod 9 to upgrade my device from 2.3.6 to ICS 4.0.4
    I Rebooted my phn with CM9 ROM by ROM Manager without wipe out and other processes necessary for Systematic Installation of CM9……
    Now when starting,my phn is jus showin’ the start page of CM9….
    Nothing ELse….
    Its not starting….
    Help Me to fix this…..
    PLs reply me Sharp…. :(