The bootloader is the first program that starts when you turn on your Android phone. The bootloader’s role is to launch an operating system, Android in this case.
On most Android phones, the bootloader is locked, preventing the modification of the system and installing alternative distributions (LineageOS, MIUI …).
All new Xiaomi phones have their bootloader locked, preventing you from rooting it (obtaining administrator rights and installing what you want on it) or installing custom ROMs (modified versions of MIUI for example).
The purpose of this article is to help you unlock the bootloader of your Xiaomi phone in order to become free! Let’s go !
Note: before continuing, save your personal files! Unlocking a Xiaomi phone is a potentially risky operation, so be careful.
In summary
Prerequisite
Before you start unlocking the bootloader, you must:
Go to the Official Xiaomi MIUI Website and click on the Register link at the top right.
Click the Use and email address button to create a Mi account using your email address. You can obviously register using your phone number, but I have never received the confirmation SMS, which is why I recommend that you create your account using your email address.
Enter your email address then click on the Create Mi Account button.
Enter a password for your account, enter the verification code and click Submit.
Open your email inbox and click the link in the email you received from Xiaomi to verify your account.
If you signed up with the email address of a Google account, you only need to authorize Xiaomi to access your Google account to validate your Mi account.
Here, your Mi account has been created! You will be redirected to the account activation page.
To activate your Mi account, enter a username and click the Activate button.
Here, your Mi account is created and activated! Let’s go to the second step.
In order to unlock the bootloader of your phone, you must request an unlocking authorization from Xiaomi. Once Xiaomi has authorized your Mi account to unlock bootloaders, you will be able to use your Mi account to unlock the bootloader of any Xiaomi smartphone.
To make this request:
The message “Submited. Please wait for the review” Indicates that your request has been taken into account. Within a few hours or days, you will receive a confirmation SMS informing you that your Mi account is now authorized to unlock the bootloaders of Xiaomi phones. In my case, I waited 24 hours, I don’t know how long it can take!
Please note: from now on, you cannot continue this tutorial unless you have received the confirmation SMS from Xiaomi! Without this confirmation, you will inevitably be blocked at the last step, as your Mi account does not yet have the necessary permissions to unlock the bootloaders. Ultimately, you can just follow steps 3 and 4 to save time!
You must connect to your Mi account on your Xiaomi phone for the unlocking software (which we will use later) to detect that your Mi account is authorized to unlock this Xiaomi phone:
We will now install the driver necessary to recognize the Xiaomi phone in Fastboot mode on Windows:
To unlock the bootloader of your Xiaomi phone, you will need to use the MiFlash Unlock Tool program.
Congratulations, you’ve just unlocked your Xiaomi – Redmi’s Bootloader!
To be sure, enter the following commands and verify that the values for “Device unlocked” and “Device critical unlock” are set to true.
adb reboot bootloader
fastboot oem device-info
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