How to root Asus Zenfone 2 Laser| Unlock Bootloader| Install TWRP

Asus Zenfone 2 Laser ZE550KL announced on August 2015 comes with an Octa-core CPU which seems enough to power your daily needs & manage to offer decent battery life. But, if you are a gamer or use your device lot, you’ll experience slowing down because of heavy Apps like Facebook, Messenger etc. Most people remove those Apps to improve performance. While some try the other way i.e rooting their device. If you don’t know about rooting, you can refer our Everything about rooting guide. Most of the guides available online are mostly hard to follow or doesn’t work. Before rooting Asus Zenfone 2 Laser , read the disclaimer. So, lets get started with rooting Zenfone 2 Laser.


You device’s warranty may be void after following below mentioned instructions. If any thing goes wrong and you end up with a bricked or semi-bricked device then neither our site or any of these app developers will be responsible. So, try these instructions at your own risk.

Also Read: 

Prerequisite for rooting Zenfone 2 Laser:

  • Additionally, you must have a windows PC.
  • Install USB drivers for your Asus Zenfone 2 Laser ZE550KL.
  • Goto Settings -> About and tap multiple times continuously on “Build number” to active “Developer options” and then goto Settings -> Developer options and enable “Usb debugging” option.

Update:  Working On Latest Update Of Marshmallow

Download Rooting Tools:

Note: Its Not Compulsory to Unlock Bootlader For Marshmallow Users.


How to Root Asus Zenfone 2 Laser (ZE550KL)

How to unlock Bootloader

Step 1: Download all the above tools & transfer all the Apk files in your device.

Step 2: Now Install ZE550KL Bootloaderunlocker.apk in Your Device. Follow Below Screenshot Instruction.

Step 3: Extra ‘ADB Fastboot Tool.rar’

Select Extract To ADB Fastboot Tool
Select Extract To ADB Fastboot Tool

How to Install TWRP Recovery

Step 1: Move ze550kltwrp.img into extracted ‘ADB Fastboot Tool.rar’ folder.

Step 2: Now in ADB Fastboot folder open command windows by Pressing Shift+Right click –> open command windows here. See In Below Image For Easy Understanding.!

Select Open-Command-Window-Here
Select Open-Command-Window-Here

Step 3: Now Enter the Following command in Command Window. (click Ok if Prompt on Your Device)

adb Devices
adb devices
adb devices

It will return your device code which confirms you have installed all the files properly.

Step 4: Now to reboot your device into Fastboot mode which allows flashing files, enter the below command in command prompt. or else you can Manually Reboot To Fastboot Mode By Switch off Your Phone And Press Volume Up + Power Key Together.

adb reboot bootloader
adb reboot bootloader
adb reboot bootloader

Step 5: Now to flash the TWRP recovery, just enter the below command.

fastboot flash recovery twrp.img
Installing TWRP
Installing TWRP

Once the flashing process gets completed, your device will automatically reboot into TWRP recovery.

Rooting (SuperSU)

First Install TWRP Recovery Using Above Steps 1 to 8.

Step 1: Place The Downloaded SuperSu File into Your Device SD Card or Internal Storage.

Step 2: Boot Into Recovery And Select Install. Now Locate SuperSu Pro.Zip File in Your Device And Flash it.TWRP-Recovery

Step 3: Most Important Part Of Rooting is Patience wait For Minimum 5 Minutes to Boot Your Device. Hurry.. You Done it Well. Check Your Device Root Status By Any Root Checking App. 😀


Now you can flash different mods, custom roms, kernels & lot more. If you are a Xposed lover, you can refer our guide of Installing Xposed Framework & installer in Marshmallow. If you are new to rooting, you can check best apps for rooted Smartphones. You can checkout few mods for improving battery life & performance.

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  1. Does this work on my asus zenfone laser ze550kl z00ld please i need answer the build number is WW_user_21.40.1220_2179_20170803060020715_201602190037

  2. Just a heads up, there’s a mistake in the guide.
    When you’re flashing the recovery you gotta enter “fastboot flash recovery twrp.img”, the “recovery” part is missing from the guide.

  3. I did ALL the steps and when i reboot to recovery. it goes back to stock recovery. What seem to be the problem here?

  4. My asus zen550kl bootloader is still locked! I’m already try unlock with ur apk. But, when i want press to lock the device. Ther is some notification “ur not insert device pin to verify ur device” but when i press ok, my device is still lock. How to fix it? PLEASE HELP

  5. Hey. Anyone can help me? My asus ze550kl on mm. Already unlock the boatloader. My question is. How if we want to relock the boatloader? Because before unlocking, i’m forgot to make nandroid backup. Thanks before

    1. Buddy there no need to relock bootloader .I assume you followed above guide and able to boot in costume recovery twrp,there you have option to backup,make sure you back up to your external store rather than internal.