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Flashing Guide

[Guide] All about Bootloader and How to Unlock Your Xiaomi Device Bootloader

2018-10-13 03:09:20
216564 216

Assalamu Alaikum,

What's up? I hope you are well by the grace of Allah/God. Alhamdulillah, I'm also fine.

We all know Xiaomi locked their device bootloader for safety but some reason we need to unlock our Xiaomi device bootloader.
So guys, today I want to show you, "How to unlock your device bootloader".

Before this tutorial, we should know about the bootloader.

Notice:
Before unlocking, backup your all data. Because it can be fully wiped.


What is Bootloader?
The bootloader is a program that starts whenever a device is powered on to activate the right operating system. It is therefore not only a trait reserved for Android but also one that can find out all devices with an operating, be it a smartphone, a tablet, a PC, etc.

It may occur that a device, a computer, for example, maybe equipped with two different operating systems (dual boot). In this case, either one or the other bootloader starts, depending on the user's preference or what has been pre-programmed to happen automatically.

Why Xiaomi or other company locked their device Bootloader?
Manufacturers lock the bootloader of their devices so that only the operating system installed on the device can be used. Not all brand acts in the same way either: some manufacturers release their smartphones with the bootloader already unlocked (to the delight of most computer geeks). Unlocking the bootloader allows you to install unauthorized software, this operation voids the warranty of your device.

Risks of unlocking Mi Devices?
By unlocking the device you agree that this may bring changes to some parts of the system. These changes may damage the device.
● After the device is unlocked, it becomes less secure and more vulnerable to malware attacks, which may lead to the disclosure and loss of your private data.
● Anyone can flash your device ROM easily.
● Some features which require high-security level (e.g., Find device, banking apps, added-value services, etc.) will no longer be available.

What can I do after unlocking my device bootloader?
You can Root your device, edit BuildProp, can install any custom recovery, can flash any custom ROM and much more.

Can I Re-Lock my device bootloader?
You can do it from PowerShell/Platform tool or flash official ROM by select "Clean all and lock" option. Tutorial: Here

How I can check my Xiaomi device bootloader is lock or unlock?
Go to Settings - About phone - MIUI Version (Tap 7 Times) You can see a message "Now you are a developer" - Additional Settings - Developer Options - Mi Unlock Status.


Unlocking Tutorial:
Before some month ago you need to apply and wait 1-15 days for permission! But, now Xiaomi changes their policy. Now you don't need to apply for unlocking your device.

Download Mi Unlock tool from here and extract it by using WinRar/7 Zip/others.


● Go to Settings - Additional Settings - Developer Options - then enable these two options. (Click on the name because sometimes the pointer can't enable your option properly)


● Now go to Settings - Additional Settings - Developer Options - Mi Unlock Status. (Now connect your device with internet by using mobile data and click "Add account and device". You must be needed to log in your Mi account with your device. After successfully added Mi account with your device, you can see a success message. If you see others message like error or failed then log out your Mi account from your device. Then go to the developer option and then Mi unlock status. Now click add Mi account with device. Your device asks for login. Now login your Mi account. I hope it will work.


● Now Power Off your device and go to Fastboot mode by pressing Power and Volume Down (-) at the same time.
(You need 5-10 seconds for it. If you try to go Fastboot mode but your mobile doesn't go to Fastboot mode then just power off your mobile, then hold press Volume - button and connect the data cable with your mobile and computer)


● Now connect your USB cable with your device.


● Now open "miflash_unlock.exe" and select "Agree".


● Sign in your Mi Account (which was connected with your phone).


● If your unlocking tool showing this message then your device is successfully connected with your computer. Now press "Unlock".


● Or if your device showing this message then you need to install/update your device Mi USB driver. Tutorial: Here


● Now click "Unlock anyway".


● Now, wait sometimes (0%-100%).


● If your unlock tool showing you this message "After 720/360/72 hours of trying to unlock the device). Then wait for the necessary time then try to unlock.


● After spend necessary time again try to unlock your device.


Congratulations! you successfully unlocked your device. Now click on "Reboot phone" or your phone can be rebooted automatically.

YouTube tutorial for you (Bangla):

If you have any question please comment or send me a PM on Telegram!
Check Master thread about Flashing:
[Master Thread] Collection of All the Important Threads Related to Flashing

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2018-10-13 03:09:20
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MIUI beta tester

ATikUR_RaHMaN | from Redmi 4X

#1

Quite good
2018-10-13 03:47:48

Device team

$huvo | from Redmi 4

#2

Thanks for sharing in details
2018-10-13 03:56:40
Another Amazing Thread From You.Thank You.
2018-10-13 04:08:35
Rayhan Hasan,
Super Moderator, Mi Community Bangladesh.

Moderator

MH Imran | from Redmi Note 4

#4

Great Post thanks for sharing
2018-10-13 04:09:14

Master Bunny

khalidsaifullah99 | from Redmi Note 5

#5

great article, keep it up
2018-10-13 04:21:58

Advanced Bunny

jony2580 | from Redmi 5

#6

bootloder unlocked kraa thakle kno somossa hbe..
2018-10-13 05:35:52

Moderator

Mainul Hasan Rohan Author | from Redmi Note 5

#7

jony2580
bootloder unlocked kraa thakle kno somossa hbe..

না! যাস্ট চুরি হলে যে কেউ ইজিলি ফ্ল্যাশ করতে পারবে!
2018-10-13 06:03:51
Moderator, Mi Community Bangladesh

I ❤️ Mi

Moderator

Mainul Hasan Rohan Author | from Redmi Note 5

#8

khalidsaifullah99
great article, keep it up

Thanks brother
2018-10-13 06:04:06
Moderator, Mi Community Bangladesh

I ❤️ Mi

Moderator

Mainul Hasan Rohan Author | from Redmi Note 5

#9

MH Imran
Great Post thanks for sharing

welcome brother
2018-10-13 06:04:23
Moderator, Mi Community Bangladesh

I ❤️ Mi

Pro Bunny

Sumaia | from Redmi Note 5A

#10

kichu shikhlam thanks
2018-10-13 06:05:09
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