How to unlock Xiaomi bootloader

Unlocking Xiaomi bootloader gives you the ability to install custom firmware and Fastboot ROM, get super-user privileges and perform other actions on the device. Xiaomi smartphones, Redmi and POKO, are sold with a locked bootloader for user data security.

An open bootloader not only allows you to install custom firmware and gain root privileges, it also allows attackers to remotely access the device, making it vulnerable to viruses and spyware. Therefore, after performing all the necessary actions with the device, you need to lock the bootloader.

The bootloader on Xiaomi, Redmi and POCO smartphones is an extra layer of protection that is enabled by default and works before the operating system boots. Once the bootloader is unlocked, you won’t be able to receive updates. Face and fingerprint unlocking, Xiaomi Find Device service, Google Pay e-payment system and some other features will be unavailable.

Xiaomi Bootloader is a program that runs every time you turn on and restart your smartphone until the operating system starts. Bootloader checks the installed operating system for errors and critical changes, and then starts it.

Key innovations in 2025

1. All activities related to unlocking (registering, applying, tethering, answering questions, using an unlocked device) must be done on a single device. Developers track this in a variety of ways (including the SIM card) to prevent unauthorised unlocking attempts. If irregularities are detected, your account may be suspended.
2. The Mi account must have been created more than 180 days ago and have a clean history.
3. You can only unlock one device per account per year.
4. If you have changed your Mi Account information (phone number, email and other security-related data) in the last 180 days, your application may be rejected.
5. The likelihood of rejection is also affected by how many devices your Mi Account is used on, how often your geolocation and IP address change.
6. If you’ve been authorised to unlock the bootloader but haven’t used it within 14 days, you won’t be able to reapply.
7. It is not possible to unlock a Chinese device from a global account and vice versa. If the region in the settings does not match and cannot be changed, you will need to register a new account for the appropriate region.

The purpose of these complications is to protect Xiaomi, REDMI and POCO users and make it harder for attackers.

By the way, there is no Pro Bunny level 5 requirement to unlock global phones and tablets (these are devices not for mainland China).

Unlock Xiaomi bootloader

It is impossible to unlock the Xiaomi bootloader without a PС (REDMI and POCO as well). On the phone without a PC, you can only check its status: unlocked or locked.

Unlocking Xiaomi bootloader consists of two steps:

1. Binding your smartphone to your Mi account.
2. Enabling USB debugging.
3. Unlocking the bootloader using Mi Unlock.

During unlocking, all user data is deleted: the smartphone will be reset to factory settings. Before performing the procedure, it is recommended to back up your data.

Step 1: binding Xiaomi phone to Mi account

To work with the bootloader, you need a Mi Account to which your device is linked. There is a limit of 1 unlock per account per year. Until 2025, you could unlock 3 devices from one account, but Xiaomi has changed the rules for the Chinese and global markets.

You also need a Chinese account to unlock the bootloader of a phone intended for sale in China. It’s no longer possible to do this from a global account.

The account must be valid for more than 30 days. If you do not have an account, you need to create one, perform the linking procedure and wait 30 days.

Don’t forget to turn off Wi-Fi and turn on mobile internet first. This is a prerequisite.

How to tether your phone to the Mi account:

1. Start your phone settings, go to Mi Account.
2. Tap the Sign out button.
3. Enter your password and click OK. Then go back to the settings list and go to About phone.
4. Tap the MIUI / HyperOS version tile 10 times until it says You are a developer.
5. Go back to the settings list, select Additional Settings.
6. Click on the Developer options.
7. Move the OEM unlock slider, then tap Mi Unlock Status.
8. Give all necessary permissions using the Agree button.
9. Tap the Add account and device to device button.

Xiaomi bootloader unlock request can take 72, 168, 360 or 720 hours to process. You can check how much time is left for resolution under Mi Unlock Status.

When applying for an account tethering in HyperOS, you may receive an error ‘Couldn’t unlock. Please go to Mi Community to apply for authorisation and try again’). To solve it, launch the Mi Community app (installed on all Xiaomi, REDMI and POCO phones by default), tap on the ‘ME’ icon in the bottom right corner, go to ‘Unlock bootloader’ and tap on ‘Apply for unlocking’ in the window that opens. After that, you will be able to tether your HyperOS phone to your Mi account.

An unlock request is valid for 336 hours from the date of receipt. If you do not unlock within 14 days, the authorisation will be automatically revoked. It is not possible to extend this period.

All you have to do is to log in to your Mi account and the device will be bound.

Step 2: enable USB debugging

Enabling USB debugging allows you to work in Fastboot mode with the phone’s internal memory and boot loader. Without its activation bootloader can’t be unlocked.

Debugging activation function is located in hidden settings for developers, that were activated in preparation for the unlock above. It remains to find the right parameter and activate it.

Activate USB debugging:

1. Start HyperOS or MIUI settings, go to Additional Settings.
2. Select the Developer options item.
3. Slide the USB debugging switch to On.
4. Confirm the action with the OK button.

Now Mi Unlock will be able to work with the bootloader.

When unlocking the bootloader, all user data will be deleted. It is recommended to make Mi phone backup. For example, transfer it to an external drive.

Step 3: Unlock the bootloader

Xiaomi has created a free program to unlock the bootloader — Mi Flash Unlock. This official utility works on Windows and does not require installation on your PC.

Before using the Mi Unlock program, install the necessary drivers that are in the archive with the program. Without them, unlocking is impossible because the PC will not see the connected smartphone or tablet.

For unlocking it is recommended to use fully working original USB-cable. If the connection is unstable, you may get a brick phone instead of an unlocked bootloader.

It is recommended that you wait at least 2-3 days after receiving the unlock authorisation. Otherwise the unlock process may fail.

How to unlock bootloader Xiaomi:

1. Start Windows Explorer, navigate to the directory with the unpacked program.
2. Double-click run the driver_install.exe file. This action will install the drivers in “silent” automatic mode.
3. Run the file named miflash_unlock.exe to start the program.
4. Accept the license agreement using the Agree button.
5. Enter registration data from your Mi account (login and password) and press Sign in button.
6. Put your phone into Fastboot mode (turn it off completely, then press Power and Volume Down buttons simultaneously), connect it to your PC with the USB cable, click the Unlock button.
7. Confirm the action with the Unlock Anyway button.

Phone will be rebooted while the bootloader unlock procedure is performed. After the restart all user data and third party apps will be removed from the internal memory of your smartphone/tablet.

After the device is fully loaded, you can proceed to configure the device and install the necessary programs.

There are many reasons why the bootloader cannot be unlocked. For example, the waiting time has not elapsed.

During the waiting period, you can use the phone normally. But don’t reset it to factory settings or log out of your account after tethering your Mi account to the phone, in which case the timer will be reset to 168 hours and you’ll have to wait for bootloader unlock permission again.

Xiaomi has introduced a new rule for phones sold in China at the end of 2024. If you try to unlock the bootloader of a Chinese phone from a global account, you will get an error. You need to use the exact Chinese Mi account.

Mi Flash Unlock may give errors or not see the phone. We have collected all the possible problems, their causes and solutions in this article about Mi Unlock.

Xiaomi bootloader locking

Mi Unlock software has no bootloader locking feature. The only way to lock or relock the bootloader of Xiaomi, Redmi or POCO is to flash the device in Mi Flash Pro Tool. This free unlock bootloader tool for Windows does not require installation on your PC.

Also need to download the firmware Fastboot ROM for your device model and unzip it into any folder. Download ROM can be found in the catalog of the official firmware HyperOS and MIUI — phones, tablets.

How to lock bootloader Xiaomi:

1. Run Mi Flash Pro, select the region you want in the pop-up box, click OK.
2. In the top panel, click the Mi Flash tab.
3. The first time you run the program, it will prompt you to install the necessary drivers. Accept it using the Install button.
4. Press Select button and choose the directory with the unpacked firmware, press OK.
5. Connect your phone to your PC with a USB cable and click Refresh for the program to detect the device.
6. Check the clean all and lock box at the bottom of the window, and then click Flash.

The flashing process will start, and takes about 5 minutes. After the process is completed the phone will automatically restart.

After the restart, the bootloader will be relocked and you’ll have to perform the basic OS setup and enter your Mi account registration data. You will be able to fully use your smartphone only after the setup procedure.

Flashing the phone using Mi Flash Pro is essentially flashing without unlock bootloader Xiaomi. After installing the firmware, all the data from the device will be deleted and the bootloader will be locked automatically.

There is an alternative option to lock the bootloader — through the Windows PowerShell console. It is not suitable for Xiaomi and Redmi smartphones released before 2017 (POCO brand phones are released since 2018). You need to install ADB drivers and enter commands into the console.

First you need to download and install the ADB drivers, then enter commands into the console.

How to lock a phone’s bootloader via ADB:

1. Start Windows Explorer, navigate to ADB directory with the unzipped archive.
2. Right click mouse button with Shift key on empty directory, then select Open PowerShell windows here in the context menu that appears.
3. Put the phone into Fastboot mode by pressing volume down and power button on the switched off phone for 10 seconds.
4. Connect the phone to PC with original USB cable.
5. Enter fastboot devices command in the console and press Enter. This command is needed for PC to connect to the phone in ADB mode.
6. To lock bootloader enter fastboot oem lock into console, press Enter. If the procedure is successful, you will see OKAY in the console.
7. Enter the fastboot reboot command to reboot the smartphone into the system and press Enter.

How to check the bootloader status

The easiest way to check if the Xiaomi bootloader is unlocked is to look at the device’s screen while booting:

• If it says Locked or displays a closed lock icon, the bootloader is locked.
• If the lock is open and it says Unlocked — it is unlocked.

If this simple method does not help you check the bootloader status, you can use HyperOS / MIUI Developer Mode or ADB.

How to check if bootloader is unlocked Xiaomi:

1. Go to Settings → About phone → tap the MIUI / HyperOS version field 10 times. This will activate the developer mode.
2. Open Settings → Advanced Settings and find the Mi Unlock Status line.
3. The message at the top of the screen will show that Xiaomi Bootloader is locked and the device is protected, or that it is unlocked.

How to check the bootloader using ADB:

1. Turn off your phone, press the power and volume buttons down to enter Fastboot mode.
2. Connect your smartphone to PC via USB cable.
3. On the PC, navigate to the directory with the installed ADB and Fastboot drivers.
4. Right-click with the Shift key on any free space in the folder. From the menu that appears, select Open PowerShell window.
5. In PowerShell, type fastboot oem device-info, then press Enter.
6. The line Device unlocked will be marked True or False. True means the bootloader is unlocked, False means the opposite.

An unlocked bootloader on smartphones allows you to bypass the restrictions set by the developers and customize the device. At the same time, it has a negative impact on security and is one of the reasons why the phone does not receive OTA updates.

Xiaomi’s official website says that if the bootloader is unlocked, you forfeit your device’s warranty. We can’t confirm or deny this. If you have experience, write about it in the comments. Unlock bootloader Xiaomi, Redmi or POCO makes sense if you know exactly why you need it.