Unlocking the bootloader is the first and most important step for those who want to get full control of their Xiaomi, Redmi or POCO device. Standard MIUI or HyperOS firmware imposes a number of restrictions that prevent the installation of custom recaps, root rights or global versions of software. The unlock process allows you to remove these software locks, turning the smartphone into a truly open gadget.
However, before you start, you need to understand the risks. The procedure is officially supported by the manufacturer, but it completely erases all data from the device. Once the bootloader is unlocked, some banking applications and services of Google Pay (NFC) will stop working unless you take additional measures to hide the root rights. You will need a stable Internet connection, original cable and a little patience, as the process is often delayed due to waiting timers.
In this guide, we will take a look at how to link an account, get permission from Xiaomi servers, and perform the procedure through the official utility. We will not only look at the standard method, but also answer frequent questions users have when faced with errors. Prepare for your phone to be reset to factory settings, so take care of backup in advance.
What is a bootloader and why unlock it
A bootloader is a small program that runs before the Android operating system boots, which checks the digital signatures of all system partitions and ensures that the device only runs licensed and unmodified software from the manufacturer, and when locked, it prohibits any changes to the system partition, which ensures the basic security of the device.
When you decide to make a unlock, you allow the bootloader to receive and run program code from any source, not just signed with Xiaomi keys.This opens the door to install custom recavators like TWRP, which allow you to make full system backups, clear the cache more deeply and install modified versions of Android. Without the unlocked bootloader, installing custom firmware is technically impossible.
Many users are eager to unlock a device to install global firmware on a Chinese version of a smartphone or to gain superuser (Root) rights. Root rights give full access to the file system, allowing you to remove system debris, modify fonts at a deep level and use powerful automation tools.
⚠️ Note: Once the bootloader is unlocked, the Find Device security mechanism may not work properly, and some bank applications may require additional security settings to run.
The unlocking process is irreversible without reflashing the stock image with the bootloader locked, which is often difficult to do yourself after making changes. So weigh the pros and cons. If you just need to install the application from an unknown source, unlocking the bootloader is not required - just turn on the appropriate option in the settings.
Preparation of the device and account Mi
The first step is to prepare carefully. You will need a Mi Account that must have been registered at least 7 days (and sometimes 30 days) ago. This is Xiaomi’s anti-fraud measure to prevent massive resale of devices. SIM-the card on which the account is registered and there is access to mobile Internet (Wi-Fi may not work at the binding stage).
Then activate the hidden menu for developers. Go to Settings → About Phone and quickly click 7-10 times on the MIUI Version (or OS Version) until the message “You became a developer” appears. Then, in the Additional → For developers, find the item “Mi Unlock Status” and click “Add Account and Device”.
It is important that the same menu includes the items “Debugging by USB” and “Factory unlocking”. Without these checkboxes, the computer will not be able to interact with the phone in Fastboot mode. Also charge the device to at least 60%, as the process can take a long time, especially if you have to wait for a timer.
- 📱 Make sure that SIM-The card is inserted into slot 1 and mobile Internet is enabled on it.
- 🔒 The password for your Mi Account should be entered on your device, not just saved in your browser.
- 💾 Make a full backup of all data as the phone will be completely cleaned.
- 🔌 Use the original. USB-cable and connect it directly to the port on the motherboard (back of the PC).
Installation of drivers and utilities Mi Unlock Tool
The official Mi Unlock Tool usually contains basic drivers, but they are not always installed correctly automatically. It is recommended to download the full Qualcomm or ADB/Fastboot driver package in advance and install them manually before connecting the phone.
Download the latest version of the MiUnlock program from the official website miui.com/unlock. Do not use third-party builds or older versions, as authorization servers may block access. miflash_unlock.exe on behalf of the administrator and log in to your Mi Account.
If the program says that drivers are not installed, try to find the driver file in the folder with the program and install it manually through the Device Manager. In some cases, Windows 10 and 11 can block the installation of drivers without a digital signature, requiring you to disable the verification of driver signatures when you boot the system.
☑️ Check before launching Mi Unlock
Once you have successfully logged in, you will see the status of your account. If done correctly, the utility will tell you that your account is linked to your current device. If you see a message about a network error or an incorrect account, check that the data is entered correctly and that the Internet connection is on your PC.
Unlocking process through Fastboot
When the preparatory phase is complete, the most critical moment comes: turn off your smartphone completely. Then press the Volume Down and Power buttons simultaneously. Hold them until you see an image of a hare repairing an android or the FASTBOOT on the screen, which is a mode in which the phone is ready to take commands from the computer.
Connect the device to the computer through USB-Windows Device Manager should have Android Bootloader Interface in Devices or Ports. If there's an exclamation point, the drivers are incorrect and you can't continue. In Mi Unlock, click Unlock).
fastboot oem unlock
fastboot flashing unlockThe program will start checking the status of the device and account, and if less than 72 or 168 hours have passed since you linked your account to your phone, you will receive a message indicating the remaining time, in which case you will have to wait, and if the time is up, the unlock process will begin, the phone will restart, and all data will be deleted.
What if the timer shows 360 hours?
Once the process is completed successfully, the phone will automatically restart, an open lock icon or an unlocked bootloader warning may appear on the boot screen, which disappears after a few seconds, and your device is now ready to install customized Recovery or firmware.
Common mistakes and ways to solve them
It rarely goes perfectly well for all users, and one of the most common mistakes is, "Couldn't verify device" or "Current account is different," which means that the account you log into the utility on your PC doesn't match the one you're using on your phone, so the solution is one: double-check the login data and make sure that the phone settings in "Mi Unlock Status" display that account.
Another common problem is that it freezes 50% or 99%, often due to an unstable Internet connection or the blocking of Xiaomi servers by an antivirus. VPN (Sometimes it helps to change the region, or connect to another network. USB-Port 2.0 instead of 3.0.
| Mistake. | Probable cause | Decision |
|---|---|---|
| Account isn't authorized | The account is not tied to the developer menu | Link your account to Settings → For developers |
| Device not found | Not installed drivers or bad cable | Install drivers, replace cable, change port |
| Server error / Network error | Problems with Xiaomi server or Internet | Use VPN, change network, wait |
| Wait 168 hours | The waiting period for security has not been completed. | Wait for the specified time without resetting the binding |
If the utility produces an error related to the software version, make sure you are using the latest version of the Mi Unlock Tool. Older versions may not support new authorization protocols. It is also worth checking if your account is blocked by Xiaomi security for suspicious activity.
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If the unlocking process is interrupted in the middle, don't panic. Just re-enter Fastboot mode and start the procedure in the utility. The data may have already been deleted, but the unlock itself needs to be completed.
Actions after unlocking the loader
Once you've made the unlock, the phone will go back to factory settings. You'll need to reset your original Android setup. The first thing you should do is install customized recavators like TWRP or OrangeFox. This is done through the fastboot flash recovery command twrp.img, but only after you make sure the bootloader is unlocked.
It is important to know that an unlocked bootloader reduces the security level of the device.Some applications such as banking clients, Mi Fit (in some versions) and streaming services in the app. HD-To circumvent these restrictions, it is often necessary to install Magisk modules (Zygisk, DenyList), which hide the fact that root rights and unlocked bootloader are available.
⚠️ Warning: Never try to lock the bootloader back (Relock) if the phone has custom firmware installed or the system partition changed. This is guaranteed to lead to the "brick" of the device (Hard Brick), which can only be restored through paid service tools.
Now you have complete control over your gadget, you can change system files, you can delete undeleteable standard software, and you can customize the interface beyond recognition, but remember, responsibility: with great force comes great responsibility for system stability.
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Unlocking the bootloader is a point of no return for warranty and security, but it opens up limitless customization options for power users.