Bootloader Unlock Guide: Steps to Unlock Bootloader On Asus Zenfone 2

Howdy Zenions, Today we're here with the tutorial on how to unlock bootloader on zenfone 2. We need to unlock bootloader on zenfone 2 to install custom recovery images like TWRP/Philz with which we can flash custom roms, update images, backup and restore our zenfone 2.

Notes and Pre-requisites to Unlock Bootloader on Zenfone 2:

1. This process works for ZE551ML (Z00A) and ZE550ML (Z008)

2. Before unlocking the bootloader, update firmware to 2.19.40.12 (ZE550ML) and 2.19.40.18 (ZE551ML).

3. Make Sure that ADB is working properly with your pc.

How to Unlock Bootloader on Zenfone 2:

1. First ROOT your Zenfone 2. (Tutorial Here)

2. Download ADB from here if you don't have one.

3. Turn on USB debugging in developer options and connect your zenfone 2 to pc.

4. Open Command Window in ADB folder. (When you are in ADB folder, hold shift + right click and select open command window here).

5. Type the below commands one by one.

adb shell

getprop ro.isn > /factory/asuskey

reboot bootloader

6. Now the phone restarts into recovery and updates itself and reboots again.

7. When the phone restarts, a white splashscreen appears. Download black splashscreen from here.

8. Place the downloaded splashscreen in ADB folder.

9. Again open command window in ADB folder and type the following commands

adb reboot bootloader

fastboot devices (See if your device is listed in connected devices)

fastboot flash splashscreen splashscreen.img

10. Done! The process of unlock bootloader on zenfone 2 is completed.

This is the actual process to unlock bootloader on zenfone 2, if you find any other process to unlock bootloader on zenfone 2 please share it with us.