Bootloader on Xiaomi: what it is and how to work with it in 2026

If you've ever tried to install custom firmware on a Xiaomi smartphone, you've probably come across the term bootloader. It's not just technical jargon, it's a key security element that controls the boot of the operating system. Without unlocking the bootloader, you won't be able to flash alternative software, get root rights, or even restore the device after a major crash.

But why is Xiaomi making life so difficult for users? It's all about security policy: the manufacturer seeks to protect devices from viruses, unauthorized modifications and potential vulnerabilities. On the one hand, this is good - your smartphone is less susceptible to attacks. On the other hand, restrictions prevent experienced users from fully controlling their device. In this article, we will discuss what a bootloader is, why unlock it, and how to do it officially without violating the warranty (well, almost).

What is a bootloader and why you need it on Xiaomi

A bootloader is the program that runs first when you turn on your smartphone, before you boot Android. Its main task is to check the integrity of the system and transfer control to the OS kernel. On Xiaomi devices, the bootloader is locked by default, which means:

• 🔒 Virus protection: it is impossible to install uncertified software without the user’s knowledge.
• 🛡️ Warning about modifications: when trying to flash custom firmware, the system will give an error.
• 🔄 Recovery from failures: If the firmware is damaged, the bootloader can return the device to factory condition.

But a locked bootloader is a problem for enthusiasts, and you can't unlock it without it.

• 📱 Install TWRP or other custom recovery.
• 🔧 Get root rights through Magisk.
• 🔄 Switch alternative firmware (LineageOS, Pixel Experience, etc.).
• 🛠️ Restore the “brick” (defaulting device) via fastboot.

It is important to understand that unlocking the bootloader will void the software warranty (but not the hardware!) and after the procedure, all data on the device is reset – this is an inevitable security measure from Xiaomi.

How to check the status of a bootloader on Xiaomi

Before you unlock a bootloader, you need to know its current status, and you can do this in two ways: through fastboot or through the Mi Unlock app, and let's look at both.

Method 1: Through fastboot mode

This method requires a computer with ADB/Fastboot drivers installed and USB debugging enabled on the smartphone.

1. Turn off your smartphone and press Volume Down + Power to log into fastboot.
2. Connect the device to the PC and open the command line (or terminal).
3. Enter the command: fastboot oem device-info
4. In the conclusion, find the line Device unlocked: true/false. If false, the bootloader is locked.

Method 2: Through the Mi Unlock application

Download the official Mi Unlock Tool from Xiaomi (link is current for 2026: en.miui.com/unlock).

1. Sign in to your Mi-account (it should be linked to the device!).
2. Connect your smartphone in fastboot mode.
3. Press Check – the program will show the lock status.

If you see a message saying "This device is locked," the bootloader is locked. If "Unlocked," it's unlocked.

Official unlocking of the bootloader through Mi Unlock

Xiaomi provides a legal way to unlock, but with a number of restrictions, the main rule is that you must have a Mi-account tied to the device (with a confirmed phone number) and permission to unlock, which is not immediately issued.

The process takes between 72 hours and 30 days, a measure against mass unlocks (e.g., to resell devices).

1. Download and install the Mi Unlock Tool (version no lower than 5.5.224.30 for Windows).
2. Turn it on on your smartphone: 🔧 Settings → The phone. → Version. MIUI (Press 7 times to activate the developer mode). 🔧 Settings → Additionally. → For developers → Unlocking OEM (slide on). 🔧 Debugging by USB (Ibid., in the developer settings).

Mi-account

Settings → Xiaomi Account → Synchronization

fastboot

Loudness down + Nutrition

Mi Unlock Tool

Unlock

"Couldn’t unlock"

Once successfully unlocked, the smartphone will automatically reset to factory settings. All data will be deleted!

Create a backup copy of the data|Download Mi Unlock Tool|Enable the developer mode|Link Mi-account to your device|Charge your smartphone at least 60%-->

Informal Unlocking Methods: Risks and Consequences

You can find "circumvent" ways to unlock a bootloader online without waiting 72+ hours, usually by using modified versions of the Mi Unlock Tool or exploits in older versions of MIUI.

• 🚨 Xiaomi may ban your Mi-account for suspicious activity.
• 💀 «Brick": incorrect unlocking can turn a smartphone into a non-working device.
• 🕵️ Data Leakage: Modified Tools May Have Malware.

The only relatively safe “unofficial” method is the use of the EDL-The Emergency Download Mode is a box like the Qualcomm 9008:

• 🔧 special cable or adapter.
• 💻 Knowledge of working with QFil or Mi Flash Pro.
• 📄 Authorized Developer Account (for new models).

If you urgently need to unlock, it is better to buy a used smartphone with an already unlocked bootloader (for example, on Avito or AliExpress, look for the tag “unlocked bootloader”).

Xiaomi models with bootloader unlocking features

Not all Xiaomi smartphones unlock the same. For example, devices on MediaTek processors (Redmi Note 11/12 series, Poco M4/M5) require additional manipulation with the SP Flash Tool, and flagships (Xiaomi 13/14, Mix Fold) can have enhanced protection.

The table below shows the features for popular models that are relevant for 2026:

If your model is not in the table, check it on the 4PDA or XDA-Developers forums – they often post current unlock guides for new devices.

What to do after unlocking the bootloader

Now that the bootloader is unlocked, there are new possibilities for you, but first, you need to take a few critical steps:

1. Install custom recovery (for example, TWRP). This will allow you to create backups and sew ZIP-Download the version specifically for your model from twrp.me and run through fastboot: fastboot flash recovery twrp.img fastboot boot twrp.img
2. Make a full backup through TWRP (Boot, System, Data) and save a copy to your PC!
3. Sweep through Magisk for root rights (if necessary). Use the latest stable version from GitHub.

Now we can experiment.

• 📲 Install custom firmware (LineageOS, ArrowOS, etc.).
• 🔧 Optimize performance through cores (FrancoKernel).
• 🎨 Change the look with themes and mods (Substratum, LSPosed).

But remember: with the unlocked bootloader:

• ⚠️ Do not update over the air – this can lead to a re-block.
• ⚠️ Do not use banking applications with root rights (risk of blocking the account).
• ⚠️ Regularly check firmware integrity through Magisk or TWRP.

💡

If after unlocking the bootloader, the smartphone stopped seeing SIM-Flip the original nvram or modem file through fastboot, often solving network problems on MediaTek devices.

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes encounter problems with bootloaders, and here are the most common mistakes and ways to solve them:

If the bootloader has been unlocked and the smartphone has turned into a brick (it doesn't turn on, flashes a red light), don't panic. 99% of the time, it can be restored:

1. Download the stock firmware for your model from the official website.
2. Unpack. ZIP-Download the file and run through fastboot: fastboot flash boot boot.img fastboot flash system system.img fastboot flash vendor vendor.img fastboot reboot
3. If it doesn’t help, use it. EDL-Regime (Authorized Account Required).

💡

Never flash files that are designed for another model or region (such as the firmware for the Redmi Note 12 Global on Redmi Note 12 China) and this will result in a broken modem, camera, or full brick.

FAQ: Answers to Frequent Questions