How To: Root A Xperia Z2 If It Has A Locked Bootloader

Last updated: July 1, 2020.

How To Root A Xperia Z2

In this guide, we’re going to show you how to root Sony’s Xperia Z2 without unlocking it’s bootloader.  Take note, though, that the latest firmware Sony released for the Xperia Z2 – based on build number 17.1.1.A.0.402, has patched the exploit that we use in this method.  Thus the method we show here only works with devices running firmware with build number 17.1.A.2.55 and 17.1.A.2.69.

Prepare your phone:

  1. First, check that you have the correct device.  This guide only works with the Sony Xperia Z2. Check your device model in Settings > About Device.
  2. Secondly, this will only work if your Sony Xperia Z2 is running firmware of build numbers 17.1.A.2.55 and 17.1.A.2.69. Check your firmware’s version in Settings > About Device.
  3. Charge your phone’s battery to least over 60 percent. This is to prevent you from losing power before the process ends.
  4. Backup all you importants, contacts, call logs, and sms messages.
  5. Backup your important media content manually by copying them to a PC.
  6. If you have a custom recovery installed, use it to create a backup of your current system.

Note: The methods needed to flash custom recoveries, roms and to root your phone can result in bricking your device. Rooting your device will also void the warranty and it will no longer be eligible for free device services from manufacturers or warranty providers. Be responsible and keep these in mind before you decide to proceed on your own responsibility. In case a mishap occurs, we or the device manufacturers should never be held responsible.


Root your Xperia Z2 with locked bootloader:

  • Download theXperia Z2 Rooting Toolkit
  • Extract the tool kit on your PC.
  • Go to setting>Developer Options to enable USB debugging.
  • Use a USB cable to create a connection between your device and a computer.
  • Run Toolkit. Double click ‘runme.bat’.
  • You should see in the CMD windows that the process will start Installing exploit app. Wait for the process to finish.
  • You will see a message saying ”Copying BIG file “, this is normal and means the process is still ongoing.  Continue to wait.
  • When you see the message below appear, you need tocrash your service menu on your device. Access phone and you will find script has opened a service menu on it. Click on Service Info > Configuration. Now press any key to continue.


  • After crashing the service menu the first time on your command prompt screen, you could see the same message again. Do it again.
  • When the process continues, you should see the message Removing exploit app”.
  • Disconnect device from computer.

Have you rooted your Xperia Z2 with a locked bootloader?

Share you experience in the comments box below.


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