Root Asus Zenfone 2


Here you will be guided to root Asus Zenfone 2 ((ZE550ML and ZE551ML) and we will be using a preroot-img tool to obtain root access for the smartphone.

If you are interested you can continue reading the full instructions here, at the end your Zenfone 2 will be rooted and you will then perform many activities to increase your phone performances.



  • These guides are for the Asus Zenfone 2 with model number ZE550ML or ZE551ML,
  • A Windows computer.
  • A USB cable.
  • If you haven’t installed Zenfone USB drivers first to your PC.
  • Do not forget to also enable USB debugging mode on Asus Zenfone 2 of yours.
  • Make necessary backups over your existing data and settings.
  • Good luck guys.
Asus Zenfone 2

Before starting to read the instructions please I would like to also share my previously published post related to Asus Zenfone.

How to root Asus Zenfone 2 (ZE550ML and ZE551ML)

File-files needed.

  • Download Fasboot via Medifire (After it’s downloaded, extract / unzip it then install it on your computer).
  • Download from Mediafire (1GB size) to be used in rooting Asus Zenfone 2. (Save the file to your computer then unzip it to the Fasboot folder).Explanation

    • File Z008 for Asus Zenfone 2 ZE550ML.
    • FileZ00A for Asus Zenfone 2 ZE551ML.

Again I remind you to make backups over your data stored in your Asus Zenfone 2 before rooting it.

Instructions to root Android Zenfone 2.

  1. Now connect your Zenfone 2 to computer.
    Connect Smartphone To Computer
  2. Now go inside the fasboot folder you extracted / unzipped earlier, inside the folder press Shift key  (from keyboard) + right click anywhere to choose Open Command Prompt Windows Here).
    Root Asus Zenfone 2
  3. Ini cmd type this command; adb reboot bootloader.
    Adb Reboot Bootloader
  4. Bootloader mode will appear on your Zenfone 2 screen.
  5. Rename the system image from preroot-system You downloaded and unzipped earlier to be system.img). To rename the file simply right-click on system image then select Rename.
  6. In cmd, type this command; adb flash system system.img.
    adb flash system system
  7. That command will execute the flashing action, that means the preroot-system.img will be flashed (Meaning your Zenfone 2 will be rooted). Just wait the flashing process till finish.
  8. When done, type this command; fastboot reboot to reboot your phone.
    fastboot reboot
  9. Your smartphone should reboot, just wait guys, then check it using a Root Checker app.

Well done. You have successfully rooted your Asus Zenfone 2 anda. Congratulations.


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