Unbrick/Restore Stock ROM on Asus ZenFone Max Pro M1 and Re-lock Bootloader

In this post, we will tell you how to restore Stock ROM on Asus ZenFone Max Pro M1 and Re-lock its bootloader. Often users flash custom ROMs on their smartphones, but then they realize they are not getting the desired performance. So, they decide to move back to the stock ROM the device ran previously. Usually, while one installs a custom ROM on his device, he has to unlock the bootloader of the device. However, they forget to re-lock the bootloader properly after they are done.

ASUS Zenfone Max Pro M1 is a smartphone launched in May 2018. The phone flaunts a 6 inches touchscreen display with a resolution of 1080 pixels by 2160 pixels. MaxPro M1 runs on Octa-core Qualcomm Snapdragon 636 chipset. It comes with options for 3, 4 and  6 GB of RAM. The device packs base storage of 32 and 64 GB which is expandable up to 512 GB using SD card. In the camera section, this phone brings a 13 +5 megapixel primary camera on the rear end. The 6GB RAM model comes with 16 +5 megapixel primary camera.  On the front face, it packs 8 MP selfie shooter(6 GB RAM model has 16 MP selfie camera). This device runs Android 8.1 Oreo out-of-the-box.

Restore Stock ROM on Asus ZenFone Max Pro M1

How to Restore Stock ROM on ASUS Zenfone Max Pro M1 and Re-lock Bootloader

Before carrying out restoring process, you have to get hold of some very important tools. Also, you have to follow some guidelines. We have put up the same in the section below. We have also added the download link of the required tools and ROM file for your convenience.


  • This guide is exclusively for ASUS ZB601KL and ZB602KL devices.
  • Make sure to take a full backup of all your apps and device data as the device storage will be formatted.
  • Charge your device more than 50%.
  • A PC/laptop
  • You have to install ADB Fastboot on your PC.
  • Enable USB Debugging on your device.
  • Remove all security options such as passwords, finger swipe patterns, etc.
  • Install the latest drivers for the device.
  • GetDroidTips will not be responsible for bricking of any devices. Follow this guide carefully at your own risk.


Fastboot Firmware – WW-15.2016.1810.334 Fastboot Firmware – WW-15.2016.1810.337   Latest Update for Zenfone Max Pro M1

Steps To Restore Stock ROM on ASUS Zenfone Max Pro M1

Step-1 Download Fastboot Firmware and Drivers to your PC & extract both zip files. 

Step-2 Connect the device to your computer. Go to the folder where you installed ADB.

Step-3 Open shell in ADB. Right click  + Shift > Open PowerShell here.

Step-4 Type the command to list your phone.

adb devices

Step-5 Now enter the fastboot mode by giving the following command,

adb reboot bootloader

Step-6 Now go to the folder where you saved the downloaded firmware and click on flashall_AFT.bat.

Step-7 Wait for some time as the firmware is installed.

Step-8 Now You will see System update notification after you set-up your device. Install and enjoy.

How To Relock the Bootloader  

Step-1 Go to the folder where you have ADB and fastboot installed,

Step-2 Hold shift and right click inside the folder then select “Open PowerShell window here“.

Step-3 Go to the PowerShell window and enter the following commands in order:

adb reboot bootlPowerShell
fastboot oem lock
fastboot reboot

Step-4 Your device will reboot and take time to start up.

Step-5 Go to Settings > developer options again > Un-check OEM unlock option.

We hope this guide was helpful to you. If you have any queries do let us know in the comments section.



Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.