2 Easiest Ways to Unlock and Relock Bootloader Zenfone 5/6

How to unlock and relock ASUS Zenfone 5 and Zenfone 6 - Under world of Android hacking and rooting, there are many gadget geekers unlock the bootloader. Why? When our phone in Unlocked bootloader we make possible to put and install any custom ROMs, custom kernel on the device. We must write this tutorial because for next Zenfone tutorial is required unlocking the bootloader.

In computing, booting (or booting up) is the initialization of a computerized system. The bootloader is the first thing that starts up when a phone is turned on. In other words, bootloader is code that is executed before any Operating System starts to run.

The concept of bootloaders is universal to virtually all Operating systems that inculcates operating systems on your PC, laptop/notebook, smartphones, and other such devices.

Don't Miss How to Install Zenmotion to ASUS Zenfone 5 and Zenfone 6.

A bootloaders basically package the instructions to boot operating system kernel and most of them also have their own debugging or modification environment.

Every Android phone has a bootloader that instructs the operating system kernel to boot normally. Although Android OS is an open source Operating System and is available on a variety of hardware, every manufacturer has their own version of bootloader specific for the hardware present in it’s environment.

Unlock Bootloader Zenfone 5 / 6

2 Easiest Ways to Unlock and Relock Bootloader Zenfone 5/6

Just likes the title said, we have 2 choice to unlock the bootloader of our Zenfone. We'll write both for you. Try both, if the first one fails then try a second. Ok! Let's start the stuff!

1st, Using APK from ASUS

The first, we will use APK that ASUS served. Choose this two with your device type :

How to start? You just need to download and install the APK. Cause it's compressed in .zip package so extract it and then install the APK normally. Once installed, open the app and follow the instruction.

2nd, Flashing The Phone

This guide is for Lollipop version only. Before we do this, we must prepare some tools. They are :
  • A PC / Computer / Notebook
  • A USB Cable
  • Rooted device. Read the tutorial
  • Turn On Zenfone USB Debugging Mode on Developer Options
  • Intel USB Drivers. Download
  • ADB and Fastboot tool. Download
  • UBL files. Download

We assumed you prepared the things above. Next, we'll execute our phone.

1 Unlock Bootloader Zenfone 5 Lollipop

Make sure Intel USB Driver installed properly and read your phone. We need flashing the phone using UBL file that you downloaded before. Follow this tutorial :

STEP 1
Download All the required thing above then extract all file that you get.

STEP 2
Copy / move the it to folder with ADB tools.

STEP 3
Turn off Zenfone 5 and go Droidboot mode using power button + volume up.

STEP 5
Open ADB folder on your computer. Press Shift + Right Click then choose Open command window here. The window command promt will appear on your computer screen. Type and run 4 commmand below :

fastboot flash fastboot fastboot.img
fastboot reboot-bootloader
fastboot flash dnx dnx_fwr_ctp_a500cg.bin
fastboot flash ifwi ifwi_ctp_a500cg_unlock.bin

For the 4 command above, it must be like this :

bartolab@ubuntu:~$ fastboot flash fastboot fastboot.img
target reported max download size of 1320080725 bytes
sending 'fastboot' (13273 KB)...
OKAY [  1.733s]
writing 'fastboot'...
(bootloader) secure device
(bootloader) signed image
OKAY [  2.230s]
finished. total time: 3.964s
bartolab@ubuntu:~$ fastboot reboot-bootloader
rebooting into bootloader...
OKAY [  0.276s]
finished. total time: 0.276s
bartolab@ubuntu:~$ fastboot flash dnx dnx_fwr_ctp_a500cg.bin
target reported max download size of 1322169685 bytes
sending 'dnx' (96 KB)...
OKAY [  0.417s]
writing 'dnx'...
OKAY [  0.559s]
finished. total time: 0.975s
bartolab@ubuntu:~$ fastboot flash ifwi ifwi_ctp_a500cg_unlock.bin
target reported max download size of 1322169685 bytes
sending 'ifwi' (1983 KB)...
OKAY [  0.630s]
writing 'ifwi'...
OKAY [  0.701s]
finished. total time: 1.330s

Viola, now your Zenfone 5 successfully unlocked!

2. Unlock Bootloader Zenfone 6

Actually the method is same as the Zenfone 5 steps. You just need to flash with the different file. It's included in UBL files. So dont worry about it. Let's start!

STEP 1
Turn off ASUS Zenfone 6 then enter Droidboot mode

STEP 2
Open ADB folder on your computer. Press Shift + Right Click then choose Open command window here. The window command promt will appear on your computer screen. Type and run 4 commmand below :

fastboot flash fastboot fastboot.img
fastboot reboot-bootloader
fastboot fastboot flash dnx dnx_fwr_ctp_a600cg.bin
fastboot flash ifwi ifwi_ctp_a600cg_unlock.bin

For the 4 command above, it must be like this :

bartolab@ubuntu:~$ fastboot flash fastboot fastboot.img
target reported max download size of 1320080725 bytes
sending 'fastboot' (13273 KB)...
OKAY [  1.733s]
writing 'fastboot'...
(bootloader) secure device
(bootloader) signed image
OKAY [  2.230s]
finished. total time: 3.964s
bartolab@ubuntu:~$ fastboot reboot-bootloader
rebooting into bootloader...
OKAY [  0.276s]
finished. total time: 0.276s
bartolab@ubuntu:~$ fastboot flash dnx dnx_fwr_ctp_a600cg.bin
target reported max download size of 1322169685 bytes
sending 'dnx' (96 KB)...
OKAY [  0.417s]
writing 'dnx'...
OKAY [  0.559s]
finished. total time: 0.975s
bartolab@ubuntu:~$ fastboot flash ifwi ifwi_ctp_a600cg_unlock.bin
target reported max download size of 1322169685 bytes
sending 'ifwi' (1983 KB)...
OKAY [  0.630s]
writing 'ifwi'...
OKAY [  0.701s]
finished. total time: 1.330s

Viola, now your Zenfone 6 successfully unlocked!

How to Relock Bootloader ASUS Zenfone 5 and Zenfone 6

If you looking how to relocking Zenfone bootloader here are the steps. We still using UBL file to do this. Choose with your device :

1. Relock Bootloader Zenfone 5

STEP 1
Turn off ASUS Zenfone 6 then enter Droidboot mode

STEP 2
Open ADB folder on your computer. Press Shift + Right Click then choose Open command window here. The window command promt will appear on your computer screen. Type and run 4 commmand below :

fastboot flash dnx dnx_fwr_ctp_a500cg.bin
fastboot flash ifwi ifwi_ctp_a500cg.bin

STEP 3
Finished. Now Reboot your phone

2. Relock Bootloader Zenfone 6

STEP 1
Turn off ASUS Zenfone 6 then enter Droidboot mode

STEP 2
Open ADB folder on your computer. Press Shift + Right Click then choose Open command window here. The window command promt will appear on your computer screen. Type and run 4 commmand below :

fastboot flash dnx dnx_fwr_ctp_a600cg.bin
fastboot flash ifwi ifwi_ctp_a600cg.bin

STEP 3
Finished. Now Reboot your phone

If you get sure about this please note you'll : Voiding the warranty, Will not get OTA (Over The Air) updates, Maybe facing an errors. So Do this with your own risk (DWYOR)

That's all we can write about two easiest ways unlock and relocking Zenfone 5 and Zenfone 6 bootloader. Thanks for visiting bartolab.com!
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