How To Unlock Bootloader [Xiaomi]

[Tools, Tips & Tutorials] How To Unlock Bootloader

What is Bootloader ?

In the simplest terms, a bootloader is a piece of software that runs every time your phone starts up. It tells the phone what programs to load in order to make your phone run.

How is Recovery mode Related to Bootloader ?

Bootloader loads the recovery mode. When a phone is in recovery, it can execute large pieces of code that totally rewrite the Android operating system.

What is the important of Bootloader ?

Bootloaders basically package the instructions to boot operating system kernel and most of them also have their own debugging or modification environment. As the bootloader kicks off before any piece of software on your device.

The bootloader is important because it loads both of these pieces of software. Without a working bootloader, your phone is a useless brick.

Why unlocked bootloaders are important ?

Some bootloaders, however, contain an extra layer of security that checks to make sure that it only loads an operating system that passes its approval process.A locked bootloader means you can’t install your own OS. For most people, that’s fine. However, if you want to put the latest version of CyanogenMod or any other ROMs.on your phone, a locked bootloader means you can’t.

: Video Tutorial :

Here is a Method for  How to  Unlock Bootloader of Redmi 4A :-

Steps for Unlocking Bootloader

1 )  Apply for Bootloader Unlocking permission.

     You need to apply your request here. Give a proper reason for Unlocking.

2)  Upon Approval, Download Mi Unlock Tool.

3)  Download and install FlyVPN app on your device from the Google Playstore.

4)  Launch the FlyVPN app, Choose a VPN server as China and pick the result with shortest ping time in (ms), which is green in color. As shown below:-

Note : As we all know, the issue of Unlocking Error is mainly due to the congestion of the server and time-out issues. Hence, using this alternative will ensure quick hand shake connection.

5 ) Enable Developer options:- Go to About phone > tap MIUI version at least 7 times to activate the Developer options.

6 ) Enable USB Debugging:- Go to Additional settings > Developer options > USB debugging > Enable it , Enable OEM unlocking too.

7 ) Go to Additional settings > Developer options > Mi Unlock status > Add account and device. Upon a successful binding of your  Account and Device, it will notify, "Added successfully. Mi account is associated with the device now." as shown below:-

8 ) Launch the Mi Unlock Tool, double-click "MiFlashUnlock.exe", then enter your Email/Phone no./Mi Account ID.

9 ) Switch off your Redmi 4A, then press Power + Volume Down button and hold simultaneously for like 5-6 sec until it vibrate and release when the Mi logo appear and plug in your USB Data Cable conected to your PC / Laptop. As shown below:-

Tap on Unlock.

10 ) Now your device is unlocked  ☺ 

Unlocking Bootloader will reduce your Security level , So we do not advise and encourage you to Unlock. So Please proceed at your own risk, and you are hold responsible for your own device.

Updated on 15.10.2017 : If you can't find any China server on flyVPN , then choose any other country server.

If you get an error 86012 while binding your account , then wait for 1 week . After 1 week , neglect that error and proceed to unlock with Mi unlock tool.