Asus ZenFone 3 ZE520KL
Asus ZenFone 3 ZE520KL

[Flash File] Asus ZenFone 3 ZE520KL Firmware FOTA Download [Stock Rom]

Asus ZenFone 3 ZE520KL Firmware Download.

This is a stock rom for Asus ZenFone 3 ZE520KL gotten from Asus official website.

You can download all Asus ZenFone 3 ZE520KL Flash File from Blogthetech.

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Asus ZenFone 3 ZE520KL Firmware Information

Rom Name Asus ZenFone 3 ZE520KL Stock Firmware Rom
Versions All versions available
Based On ZenUI
Latest Release Date 2018/06/21
Rom OS Version Android 7.0 Nougat
Rom Type Odexed
Software needed Stock Recovery
Compress Zip format
Drivers Asus USB Driver

How to Flash Asus ZenFone 3 ZE520KL Firmware

Asus from the Asus official website offers software updates and firmware with a flash file. All you have to make sure you have the recovery that matches the firmware you want to flash.

Why we need Asus ZenFone 3 ZE520KL Firmware

It’s always advisable to backup Asus ZenFone 3 ZE520KL Firmware after purchasing it. You are going to need it for the following reasons.

  • Downgrade or Upgrade Asus ZenFone 3 ZE520KL.

You can use Asus ZenFone 3 ZE520KL Stock rom to downgrade your smartphone or upgrade your smartphone. It depends on the release of the firmware or your choice if the option is available.

  • Unbrick Asus ZenFone 3 ZE520KL.

Asus ZenFone 3 ZE520KL Stock Rom can also be used to unbrick any Asus ZenFone 3 ZE520KL.  Smartphones can be bricked in the process of rooting or flashing a custom firmware or rom or recovery.

  • Unroot Asus ZenFone 3 ZE520KL.

You can also use Asus ZenFone 3 ZE520KL stock firmware to completely unroot any Asus ZenFone 3 ZE520KL smartphone. You also can regain your warranty by properly flashing the official Asus ZenFone 3 ZE520KL stock firmware. It can be done by reverting back to the official stock firmware of Asus ZenFone 3 ZE520KL if your smartphone has tampered.

  • Fix Issues on Asus ZenFone 3 ZE520KL.

Your Asus ZenFone 3 ZE520KL might develop issue which might be unknown to it you, if it a software related issue, you can restore and fix it by flashing the stock firmware for Asus ZenFone 3 ZE520KL. Today, we are presenting all the Official Firmware, both Official releases and updates following it. You can download all of Asus ZenFone 3 ZE520KL Firmware here. If you experience any problem with any of the files, don’t hesitate to tell us.

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Requirements to flash Asus ZenFone 3 ZE520KL Firmware

  • A working detectable USB Cord.
  • A Windows PC.
  • A Good Battery Backup
  • Intel USB Driver.
  • Asus ZenFone 3 ZE520KL Stock recovery.
  • Firmware

Note that flashing a Asus ZenFone 3 ZE520KL firmware to your phone might erase everything in your phone including contents in internal storage. It is always very advisable to backup your contents to an external storage or a PC. If your phone is bricked and can’t be accessed, I guess there is nothing you can do.

Follow this procedure below if you wish to flash Asus ZenFone 3 ZE520KL Stock Rom.

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How to Flash Asus ZenFone 3 ZE520KL stock rom

  • For you to flash Asus ZenFone 3 ZE520KL, you will need your stock recovery.
  • Download the firmware to your PC or phone and extract the zip file.
  • Inside the zip file, there is another zip file for the firmware.
  • Rename the firmware to
  • Copy the downloaded firmware to the root of your SD card.
  • Boot your Asus ZenFone 3 ZE520KL to recovery by powering it off.
  • Press Volume Up and power button to boot to recovery.
  • Choose apply update from SD card.
  • Select the file and the flashing will start.
  • Once it finishes, wipe data and reboot your phone.

Take Note.

We are not responsible for any harm that might come to your phone. Please, make sure you are flashing the right firmare, stock rom, or flash file to Asus ZenFone 3 ZE520KL.

Before flashing firmware or files, YOU are choosing to make these modifications, and if you point Your finger at us, we will laugh at you. [KIDDING.]

If the Asus ZenFone 3 ZE520KL Flash Tool didn’t detect your Asus ZenFone 3 ZE520KL, you might need to press the volume down or up button but do not power your phone.

If you don’t install all the necessary drivers, you may experience issues detecting your phone with the PC.


If the provided firmware you need to be flashed is MTK and comes with MTK Flash Files, follow the procedure below to flash MTK smartphones. MTK flash files come with preloader, boot.img, scatter file and etc.

Learn how to flash MTK Smartphone

If your smartphone is a Spreadtrum smartphone, or the flash file comes in .PAC format, it means you are going to flash it with Spreadtrum Upgrade Tool. learn how to do that below. Learn how to flash PAC files with Spreadtrum Upgrade Tool

If your smartphone is running Qualcomm chipset or the firmware you downloaded is in .mbn format, then, you should use the procedure below.

Flash Qualcomm smartphone using Qualcomm Flash Image Loader (QFIL)

If the firmware is in .CPB format, just follow the precedure below to flash it.

Flash CPB Files on Android Smartphone using YGDP Tool


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