In this guide we will see how to unlocking the bootloader. This is a simple task and most allowed by the manufacturer, therefore we will not void the warranty of our smartphones.

It is important to remember that this operation will perform a wipe of our data, this means that you should make a backup first, just to avoid losing any content.

Read Also : how to root xperia z

Why unlock the bootloader

• You can install new ROM
• It will always be possible to ROOT
• The installation of firmware version preview can be installed only with bootloader unlocked

Preliminary steps

• PC with Windows OS and USB cable for connecting the device
• Note the IMEI code of our Terminal. Simply type the code * # 06 # *
• Download and extract to a folder inside the package with drivers and fastboot usb (DOWNLOAD)
• In the case of PC with operating system Windows 8 will need to perform some extra steps. For more info see the following link
• Turn off the device is avviamolo in fastboot mode. To do this simply press and hold the Volume up button and connect it to the PC via USB cable
• At this point Windows should start searching for drivers. Let's do it point to previously downloaded drivers folder
• Once you have installed the drivers there just have to unplug the USB cable and turn on the device

Unlock the bootloader

• First of all we check our boot loader is unlocked. To do this we need to access the Service Menu by typing the code keypad * # * # 7378423 # * # *. Below we see the message unlock Bootloader allowed: Yes. This means that the bootloader is unlocked.
• From your PC go to address http://unlockbootloader.sonymobile.com/
• Read everything carefully and click at the bottom to Start unlocking bootloader, then Continue on all subsequent conditions eaccettiamo
• On the form you put our name, the first 14 digits of the IMEI of the device and our email address. Click on Submit
• You will be sent an e-mail containing our unlock code bootoloader
• We connect the device the fastboot mode (turn off your device, press and hold the Volume up button and connect it to the PC via USB cable)
• Open the Windows command prompt and let us go inside the folder previously downloaded fastboot.
• Enter now: -0x0fce fastboot.exe getvar version.If the return value is 0.5 means that the device is connected correctly
• Enter now fastboot.exe-oem unlock 0 x 0x0fceKEY replacing KEY entry code received via email
• Completed the bootloader of the device will be unlocked.

In this guide we will see how to get root rights on Sony Xperia Z, top of the range of Japanese based on the operating system Google Android. The guide works perfectly with both bootloader unlocked. Anyway you can unlock the bootloader by following our guide : unlock xperia z bootloader.

Requirements

• Sony Xperia Z with firmware unlockable (tested on firmware 10.1. d. 0.317, d. 0.322 10.1, 10.1 a. 1,350 )
• Rooting Toolkit (DOWNLOAD) with ADB driver installed

Guide

• Increase the timeout to 10 minutes display off (settings-> Display-> > 10-Minute Suspension)
• Enable USB Debugging mode (settings-> Options-> Debugging USB developer)
• Enable installing from unknown sources (settings-> Security-> unknown origins)
• We extract the Rooting Toolkit into a folder on C:\
• Close all applications that use ADB (PC Suite, PC Companion, Flashtool, etc.)
• At this point we connect the device to your PC and execute the file runme.bat
• Press Enter to start the process
• From the command prompt of your PC are the message: press the button to restore the data in your phone
• The device will launch an app. Select RESTORE data
• From the command prompt of your PC will get the message: if Restoring data is complete
• From the device type keypad the following combination: * # * # 7378423 # * # *
• Select Service Tests-> Display
• The Toolkit will run some commands
• Press the power button to turn off the display, wait a few seconds and press the power button again to turn on the unit
• On the command prompt on the PC we will see some messages, like: "transfer files to your phone part2", "installing busybox, su, Superuser, etc ..." and finally "Cleaning up"
• The device will restart automatically
• At this point we've got root right