How to Unlock Bootloader on Asus Zenfone 2 [Unofficial method]

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June 19, 2015

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2 min read

You might be able to root your Asus Zenfone 2 and do some mods, install Xposed and have fun. But for the real fun to begin you need an unlocked bootloader, and thanks to shakalaca over at XDA, it’s now an achievable feat to unlock bootloader on the Zenfone 2.

You can now the unlock bootloader on your Zenfone 2. The process is pretty straightforward and based on the feedback of some other users on the forum, it seems to be working flawlessly. You’ll need root in the first place though, to be able to unlock the bootloader. To get root follow the link below:

[icon name=”external-link” class=”” unprefixed_class=””] How to Root Asus Zenfone 2

Instructions for unlocking bootloader

[icon name=”info-circle” class=”” unprefixed_class=””] ROOT REQUIRED

Download Splashscreen img

Setup ADB and Fastboot on your PC.
Enable USB debugging on your Zenfone 2:
1. Enable developer options: Go to Settings » About » and tap 7 times on “Build number”.
2. Go to developer options from the main settings page, and tick the USB debugging checkbox from the list of options.
Open a command window on your PC, connect your Zenfone 2 via USB cable. If it asks for authorization of USB debugging, select OK.
Now issue the following commands to the command line:
```
adb shell su
```
└ This might ask for Superuser permission on the phone, make sure you grant it.
```
getprop ro.isn > /factory/asuskey
```
```
reboot bootloader
```
└ This will reboot your phone in recovery. Some processing will be done there and then your phone will reboot with a white screen. The white screen here confirms that bootloader has been unlocked.
Now to get the Black screen back. Open a new command window inside the folder where you downloaded the splashscreen image on your PC. To do that, “Shift + Right-click” on any empty white space inside the folder and select “Open command window here” from the context menu.
Once command window is opened inside the folder splashscreen image is located on your PC, issue the following commands to flash it:
```
adb reboot bootloader
```
└ This will reboot your device into bootloader mode.
```
fastboot flash splashscreen splashscreen.img
```
└ This will flash the black splashscreen back on your Zenfone 2.
```
fastboot reboot
```
└ Issue this command if your doesn’t reboot automatically after flashing the splashscreen image.