How to Unlock Bootloader of Asus ZenFone 4 ZE554KL Z01KD Easily [Simple Steps] will share a simple trick with Asus ZenFone 4 ZE554KL Z01KD owners who are trying to unlock bootloader of their phone. It comes with 2.1mm slim bezel, dual speakers, bluelight filter and Sony IMX362 image sensor. If you have recently bought ZenFone 4 ZE554KL, then you might be planning to unlock its bootloader. As we know, bootloader is a program that starts whenever phone is turned on. It activates the Android operating system on ZenFone 4 ZE554KL Z01KD. Locked bootloader does not allow us to install custom ROM on our phone. It only loads the authorized Android OS with a digital signature. will help you in unlocking ZenFone 4 ZE554KL bootloader. You will be able to install custom ROM after unlocking bootloader. Previously, I have published the simple instructions for unlocking bootloader of Asus Zenfone 4 Pro. Now, I will discuss about the step-by-step tutorial to unlock bootloader of Asus ZenFone 4.

I am hoping that you will be able to unlock ZenFone 4 ZE554KL Z01KD bootloader without facing any problem after reading the tutorial written in Don’t forget to activate developer options. You must note that your ZenFone 4 ZE554KL Z01KD will lose warranty after the bootloader unlock process. It will let you install Custom ROM. You must activate OEM unlock options on your phone. Bootloader unlock process will also let you install Magisk, so you will be able to root your phone after unlocking its bootloader.

If you are planning to install official and unofficial LineageOS custom ROM on ZenFone 4 ZE554KL Z01KD, then you must be eagerly waiting to unlock bootloader. You must save your important documents securely including messages and contacts before unlocking ZenFone 4 ZE554KL bootloader, because there is a possibility of losing all documents from your phone during bootloader unlock process.

Below are the steps using which you can unlock ZenFone 4 ZE554KL Z01KD bootloader. will not be responsible if your phone got broken during bootloader unlock process. ZenFone 4 battery must be above 86 percentage before bootloader unlock process. You must follow these steps at your own risk.

How to Unlock Bootloader of Asus ZenFone 4 ZE554KL Z01KD Easily [Simple Steps]

1. Tap “Settings” Menu, then you have to tap “About Phone” option.

2. Tap “Software Information” option.

3. Tap “Build number” option several times until you see “You are now a developer” on Asus ZenFone 4.

4. Tap “Settings” Menu again.

5. Tap “Developer options”, then activate “USB debugging” and “OEM unlocking” option.

6. Download USB driver and install it on PC.

7. Connect ZenFone 4 with PC via USB cable.

8. Download SDK Platform Tools Zip File.

9. Open platform-tools folder within the Android SDK folder on your PC after extracting the ZIP file.

10. Inside the platform-tools folder, you have to press the Shift Key and Right mouse click on your PC to open the Command Window.

11. Enter the following command to check the connected device:

adb devices

12. If your phone is successfully connected with PC, then you will be able to see a serial number.

13. Enter the following command to put Asus ZenFone 4 ZE554KL into Fastboot mode:

adb reboot bootloader

14. Enter the following command:

echo > key.txt

15. Enter the following command to unlock bootloader of ZenFone 4:

fastboot oem get_unlock_key key.txt

16. Enter the following command:

fastboot reboot-bootloader

17. Enter the following command after the bootloader unlock process is completed:

fastboot reboot

You have successfully unlocked bootloader of ZenFone 4 ZE554KL Z01KD. If you are experiencing any difficulty while unlocking ZenFone 4 bootloader, then don’t hesitate to share your issue with Please submit your email address and subscribe to get more information regarding ZenFone 4. You must check your email to activate subscription. I’ll help you in unlocking bootloader of your phone.

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