Guide | Flash Stock Firmware LG X Skin KDZ Method to Fix a Bootloop.

Guide | Flash Stock Firmware LG X Skin KDZ Method to Fix a boot loop.

Flash KDZ Firmware LG X Skin. Flashing a new firmware will bring your device to the factory setting. It will return to the Stock firmware. You can apply this method to fix any problem on your LG X Skin device, for example, your device is boot loop. When this issue occurs on your LG X Skin phone try to use this method to fix this problem. We know that bootloop is a situation where your phone fails to boot and only show LG logo and then reboot and return to this logo again. Therefore, by following this guide, it will help you how to flash a new firmware or stock ROM to your LG X Skin phone. Generally, everything stored in phone internal memory will be deleted during flashing a new firmware. This guide using KDZ method to flash a firmware and LG Flash tool 2014.

To make more understand about your LG X Skin phone, below you can read the full phone specifications;
  • LG X Skin is known as with LG F740L (this device is launched at the Republic of Korea.
  • LG X Skin released in 2016, July.
  • Comes with 5.0 inches IPS LCD capacitive touchscreen, 16M colors.
  • Powered by; Quad-core 1.3 GHz CPU,
  • This device also supported with 1,5 GB of RAM for a fast response system
  • Run on the latest Android 6.0 (Marshmallow).
  • Featured with 8 MP of primary camera, and 5 MP of secondary camera.
  • Battery; Removable Li-Ion 2100 mAh battery.
Below is step by step guide you can follow to flash a new firmware to your LG X Skin.


In order to make this guide successfully applied on your LG X Skin, the following files must ready downloaded and save to your computer folder.
1. This is KDZ flashing method. The KDZ firmware must be downloaded first to proceed with this flashing process. There are two methods to get firmware based on your LG phone models.
    - You can download the firmware by yourself using IMEI phone number and your favorite browser. For more instructions, you read the following guide
4. LG mobile support tool and install it on your computer.

Step By Step Flashing LG X Skin.

1. Make sure the KDZ firmware is successfully downloaded, for those go to download folder on your computer to check it. Once it there, just move this KDZ firmware to the desktop and then extract it.
2. Before flashing your LG phone, we recommend to charge it until full in order to avoid the system down during the flashing firmware process.
3. LG driver must installed correctly on your computer or laptop. it will help your computer to detect your LG X Skin phone.
4. But, if you see any error when installing LG driver, you can try to install Visual C++ Runtime Library first before continuing.
5. Now, go to LG flash tool 2014 folder, and run it as administrator. (right click at LG Flashtool2014.exe - select run as administrator).
run as administrator - Flash LG X Skin
run as administrator - Flash LG X Skin
6. Once the LG Flashtool 2014 window is launched. Now you can set this windows as the following guide.
flash LG X Skin
flash LG X Skin
  • Number 1: At Select type, you can choose 3GQCT
  • Number 2: Select DIAG at phone mode drop-down menu.
  • Number 3: Browse where your kdz saved on your computer drive.
  • Number 4: Just click normal flash, it will Flash ROM without losing any data. 
7. If you click the normal flash button, then you will see next window as shown in the picture below. On this window, you can continue the process by click Start button
8. Now, you will see country & Language window, on this window click clear phone software update registry button.
9. Now, go to your phone and turn off your LG X Skin.
11. Then connect your LG X Skin to the computer via USB cable while press and hold Volume Up button.
12. Release volume up button when your LG X Skin enter download mode. And your screen will show this image below.
enter download mode LG X Skin
enter download mode LG X Skin
13. Now, back to LG Flash tool 2014 window (country & Language window) and click OK button.
14. Then, you will automatically launch LG Mobile Support Tool window on a screen.
15. Just wait for the flashing process until it done. It will take a while depending on firmware size and phone models.
16. Once progress bar reaches 100% completed, your LG X Skin will reboot automatically, and you can click the exit button.
17. Finally, unplug the USB cable from your LG X Skin and the computer, and you can ready to set up your phone as the first time you bought it.

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