How To Unlock Bootloader On Sony Xperia X (F5121/F5122)

Remember Sony has a dedicated website to unlock the bootloader, You can select Xperia X to Unlock the Bootloader. It is like same as doing the unlock procedure for all Xperia Device. Follow the Step below carefully! We have also added some screenshot with the steps.

Remember – This method is to Unlock Bootloader on Sony Xperia X, So read steps carefully.

What is Unlock Bootloader?

A Bootloader is a code which runs when we turn on our device. This code initializes some hardware and then loads the kernel and ramdisk, and gets the boot process going. So this process is known as Bootloader. The same concept applies to all the technical stuff such as Laptop, PC, Smartphones and any such device. Every Android OEM manufacturers lock the bootloader even though it is an Open Source. So if you want to try any CUSTOM ROM, it is impossible to load the CUSTOM ROM without the Unlock Bootloader. So Manufacturer made a policy of making the smartphone with Unlocked Bootloader will void the warranty. They want you to stick with the Stock ROM. Unlock Bootloader allows you to Root your android smartphone, Flash TWRP and Custom ROM in a simple, easy method.

PRE-REQUISITE TO UNLOCK BOOTLOADER ON Sony Xperia X

1. This guide is to Unlock Bootloader on Sony Xperia X F5121/F5122.
2. Charge your phone up to 80% or 70%
3. You will Loose warranty if you unlock bootloader
4. Unlock Bootloader may wipe all your data, So make sure to Back up your Smartphone
5. Make sure you have followed the steps properly. Don’t Skip and Read! – We are not responsible for any damage that you make to your phone.

What you need:

• Official Bootloader Unlock Page from Sony: CLICK HERE
• Now note your IMEI no by dialing *#06# or this 15-digit code can be found on your box and also at the back of the phone
• Download Minimal ADB Tool – CLICK HERE or Download the Full ADB setup for Windows / Mac here

Steps for How to Unlock Bootloader on Sony Xperia X

1. First of all make sure your device can be unlocked or not, To Check Follow the steps below:
   • In your device, open the dialer and enter *#*#7378423#*#* to access the service menu.
   • Tap Service info > Configuration > Rooting Status. If Bootloader unlock allowed says Yes, then you can continue with the next step. If it says No, or if the status is missing, your device cannot be unlocked.
2. Now Go to the official Unlock Bootloader website of Sony: CLICK HERE.
3. Scroll down and select your device, and press Continue.
4. Now register your email.
5. You will receive mail to confirm, Tap on “Click here to proceed”.
6. Once you enter into the Sony Unlocker page, you will be asked to enter your smartphone IMEI no, Now ENTER THE IMEI NO inside the BOX. 
7. You will get your unlock key once, Now Copy the unlocker key in a notepad.
8. Now You need to enable the Developer Option on your phone.
9. To Enable the Developer Option. – Go to your Settings -> About Phone -> Now Tap on the Build Number 7-8 Times until you see a toast message “Developer option enabled“
10. Now go to Developer option in the settings and Enable OEM unlock.
11. Download ADB Fastboot tool and Extract the ADB Fastboot Tool somewhere in PC (Link is given above)
12. Now Open the Extractor ADB and Fastboot folder and Open Command Window by pressing Shift Key + Right Mouse Click.
13. Now connect the PC to Mobile with USB Cable
14. You need to Reboot the phone into Bootloader – Type the Command from below in your Command window that you opened

    adb reboot bootloader

15. Your device will boot into bootloader. (If it doesn’t then, please check your Cable or ADB Drivers and Install again). Now enter the command with your unlock key after the OEM unlock and replace this character 0x07B7BFEA7AC879F0 with your unlock key

    fastboot -i 0x0fce oem unlock 0x07B7BFEA7AC879F0

16. That’s it! You have successfully Unlock Bootloader On Sony Xperia X
17. Now you can enjoy! Boot into system by entering the command

    fastboot reboot