Here in this guide we’ll be using flashtool only for the purpose of unlocking the bootloader. → How to completely backup your Android device Method 1 – Unlock Bootloader using Flashtoolįlashtool is a multi utility program for Xperia devices that does a lot of tasks in much easier ways compared to Sony’s official ways. So make sure you back up all your important data before proceeding with the guide given below and also make sure to move your back up files to your PC or Cloud storage because even any backup file kept on the phone will be deleted.Ĭheck out the link below if you need any help with backing up your device. Back up your important data!Įvery single file on your device will be deleted once you unlock the bootloader. You’ll void the warranty of your Sony Xperia Z2 by unlocking its bootloader.

It’s much easier to unlock bootloader using Flashtool. In our opinion, go with the Flashtool method.

So proceed with whatever method you think is best. In the official method you’ve to get the bootloader unlock key from Sony’s website, which lets the manufacturer know that you intended to unlock your device’s bootloader (which voids warranty) by provding them your phone’s IMEI number to get the key.īelow are full step by step installation instructions for both the methods discussed above.

Officially from Sony’s website: You can follow Sony’s official way of unlocking the bootloader which is also simple and easy to follow, but not as friendly as Flashtool.

And on a plus note you also save yourself from letting Sony know that you tried to unlock your device’s bootloader (which voids warranty) Getting the bootloader unlocked through flashtool is very quick compared to Sony’s official way of doing it.

Unofficially using Flashtool: You can unlock the bootloader on your device using a program called Flashtool.

There are two methods you could choose from to unlock the bootloader on your Sony Xperia Z2 Two methods of unlocking the Bootloader on Xperia Z2

Unlocking bootloader using the Unlock Key.

Getting the bootloader unlock key from Sony’s website.

Method 2 – Unlock bootloader using Sony’s website.

Instructions for unlocking bootloader using Flashtool.

Method 1 – Unlock Bootloader using Flashtool.

Two methods of unlocking the Bootloader on Xperia Z2.

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