Guide to Flash Bricked - Bootloop LG G3 (LG D855P ATT) Using LG Flash Tool (KDZ method).

Flash LG G3 (LG D855P ATT). LG G3 (LG D855P ATT) is the android smartphone which announced in May 2014, and excatly released on 2014, June. Guidebelajar on this guide will explain to you how to flashing android device on LG G3 (LG D855P ATT) with easy and simple step. Flashing in android is the same way like fresh install on the windows PC, So by perform a flash on Android you will give a new performance like a new phone. One reason that you should perform a flash your android is because your android get bootloop or when you failed to install Stock ROM Mod.

This LG G3 (LG D855P ATT) is the smartphone with 5,5 Inchi True HD-IPS + LCD capacitive touchscreen, 16M colors, work on Android OS, v4.4.2 (KitKat), upgradable to v6.0 (Marshmallow) and supported with Quad-core 2.5 GHz Krait 400 CPU, Qualcomm MSM8974AC Snapdragon 801 Chipset, combined with 2 GB of RAM and 13 MP of Main camera and 2,1 MP on secondary camera.

Now, follow the isntruction list bellow, do it with your own risk.

Requirement Tool For Flash LG G3 (LG D855P ATT) .

Before you perform flash or install your firmware on LG G3 (LG D855P ATT) ,
you must download all requirement tool below ;

Download Stock Rom LG G3 (LG D855P ATT).

This Stock is KDZ file, remember to copy this KDZ file into LG Flash Tool 2014 folder
Check the firmware that match with your phone version, for ATT, below.

You can also downlaod KDZ firmware for Leap Wireless, below

Download Driver LG: Here
Latest LG FlashTool : Here

#1. Guide To Flash LG G3 (LG D855P ATT)

Please follow this guide carefully to flash LG G3 (LG D855P ATT) .

Make sure you have download all requirement tool above
Then Install the drivers with your phone connected with your Computer, when it finished disconnect your LG G3 (LG D855P ATT) phone from your computer.
Now turn your LG G3 (LG D855P ATT) phone off, then continuously click on the volume up button and connect your phone to your PC,
Now, enter your LG G3 (LG D855P ATT) into download mode. ( visit this guide)
Run LGFlashTool2014.exe.
If you cannot run LGFlashTool2014.exe, You must install Visual C++ Runtime Library,
There are two options to flash your LG G3 (LG D855P ATT) .

Normal Flash : You can select this option if you want Flash ROM without losing any data. Only use this when you need to fix system error.
CSE Flash : You can choose this option when you need a fresh format. All data will be deleted. It's suitable for upgrading or downgrading ROM or simply use this when you need to back to Stock.

LG flash tool normal flash / CSE flash

Select Type : CDMA
PhoneMode: DIAG
Select KDZ file : browse your KDZ file in your drive
Then you can Click on Normal Flash or CSE Flash (see step 7 to decide this option)
Then click Start.
LG flash tool - start
Then click on Clear Phone Software update registry.
Lg flash tool - Clear Phone Software update registry.
No need to choose desired language, it automatically change to English as a default setting.
Finally you can click OK.
You must wait a minute for the LG Mobile Support tool to recognize the LG G3 (LG D855P ATT) device.
When you wait this process, may take 5 minute the tool to recognize it.
The software will start the extraction on your device.
When the process reach 100% your LG G3 (LG D855P ATT) will reboot.
Then, you must Unplug your LG G3 (LG D855P ATT) from your computer by remove USB Cable from it.,
Finish,

#2. Guide To Flash LG G3 (LG D855P ATT)

If #1 method is failed to flash your LG Android device, you can use this second method, flashing LG device using R&D Test Tool. Here

dxRoms