How to Restore/Unbrick LG G4 H815 (Bootloop Fix)

In this guide, I will be sharing Full step by step guide On How to Restore/Unbrick LG G4 H815 (Bootloop Fix).It is a very simple, safe and easy process.

LG G4 is the Flagship phone of 2015 from LG.It has Snapdragon 808 CPU coupled with 3GB of Ram, a beautiful Quad HD display and one of the best Smartphone camera.

If you have a rooted LG G4 and you want to unroot it to get the warranty back then this tutorial will hep you to unroot your LG G4 H815.This article will help you to unbrick your soft bricked LG G4 (boot loop Fix).Below I will share a very simple guide on How to Restore/Unbrick LG G4 H815 (Bootloop Fix)

[symple_box color=”gray” fade_in=”false” float=”center” text_align=”left” width=””]Note [icon name=”hand-o-right” class=”” unprefixed_class=””] LG has officially admitted the LG G4 bootloop issue is a hardware defect and has apologized to customers and vowed to repair affected devices (Source[icon name=”external-link” class=”” unprefixed_class=””])


Now We have posted an Updated Guide to unbrick LG G4 link is given below (Follow this guide if your device is in bootloop)

How to Unbrick LG G4 With LG Flash Tool & Back To Stock

This guide is only for the lg g4 H815 android smartphone. Don’t try this method on any of other Android devices, It may hard brick your device.


Setup ADB & Fastboot On your PC


LG G4 ROM | File: (832 MB)

(LG G4 Model No. H815)

How to Restore/Unbrick LG G4 H815 (Bootloop Fix) in 5mins

How to Restore/Unbrick LG G4 H815 (Bootloop Fix) in 5mins

  1. Download and Install LG Android Drivers On your PC
  2. Make sure have Unlocked bootloader of LG G4.
  3. Make sure you have installed TWRP In LG G4
  4. Download the custom ROM file, from the given link
  5. Now Connect your LG G4 to PC.
  6. Transfer the Rom zip file to your LG G4 internal/external memory
  7. Reboot into recovery mode.
    1. Open the command window at the location where you have the TWRP recovery. For this, while holding shift key, right click from mouse on the white space inside the folder. You’ll get a pop-up as shown below. Select the option: Open command window here
      How to Restore/Unbrick LG G4 H815 (Bootloop Fix) - 2
    2. A command (cmd) window will open up. Now, copy the command below and paste it in the command window, and then hit Enter key.
      adb reboot recovery
  8. Flash custom ROM now. In TWRP recovery, tap on Install, and then browse to ROM file( and tap on it to select it for installation. On next screen, just do the ‘Swipe to Confirm Flash’ to install root on LG G4.
  9. You will get Successful written in blue text on next screen, tap on Reboot System. Wait for the device to boot up.


DONE!!!! You have successfully unbricked your LG G4.If you have any questions on this feel free to leave that in the comment below. 🙂

Dibyashree Sharma
Dibyashree Sharma
Dibyashree Sharma, who graduated in Computer Science from NIT Rourkela, is an experienced blogger and an enthusiast of Android technology. She has spent eight years writing about Android OS, earning a reputation as a reliable source in the technology field. Away from the digital sphere, Dibyashree enjoys playing tennis, a sport she is as passionate about as she is about technology.

Comments (31)

  1. How can I transfer ” LG G4 ROM | File: (832 MB)”” to a phone that does not go beyond the LG boot logo.

    • easy! enter twrp recovery if you have it installed then presto just like magic your pc will detect phone and open the internal hard drive so can transfer files 😛

  2. If you have installed on your device and you can boot into TERP then there is an option in TWRP recovery To Mount system or Sd card.then you can transfer any files to your device via USB

  3. Maybe this is a stupid question, but if your phone is in a bootloop, how do you backup your data? Since it is the first step in repairing the bootloop.

    • First charge it until 100%, then remove the battery, case and phone, put them in container and place them in freezer for about 1-2 hours, leave it in freezer, connect the data cable, and transfer the files, worked for me on international model 🙂

  4. This doesn’t appear to make any sense as a few of your steps require the phone to be in an unbricked state. For example, if the phone is stuck in a perpetual bootloop, you can’t transfer files onto it.

      • I had to send my phone to service… =/
        But LG had to cover it cause it was their problem.
        The mobilestore tried to charge me, but then I showed them the news from LG saying they will cover all expenses from this problem, then the mobilestore where I bought the phone, contacted their local LG contact, and then he just said, I dont half to pay anything. LG paid my mobile shop for fixing my phone

        • Its ok but You don’t have to transfer any files to your phone if you are using lgup flashing tool to install the KDZ format of the stock ROM.It works like ODIN flash tool.

  5. Hello?! If your phone is stuck in bootloop you can’t access it to download anything. Duh! This tutorial is pointless and you even said you would update and didn’t

  6. So after doing some research, I attempted a “Fix” myself. After the attempt, I was able to browse the web, watch videos via the YouTube app and enjoy the features of the camera and all the functions the LG G4 has to offer.

    Here’s a quick video on what was done to get the G4 back up and running…

    Feel free to share the link or embed provide assistance to others.

  7. What an ignorant asshole. His clearly not experienced or know how to fix the problem.
    The freezer option is what I’m using right now. If I can atleast get my data backed up I can then fuck this phone through the galaxy, thanks LG.

      • Hey, yeah it did. You going to have to put it in a sealed container or ziplock bag so that the phone doesn’t get covered in water.
        About 30 minutes in there should do it. You will only get a few minutes out of your phone before it loops again, so you have to backup your stuff immediately.


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