If you’ve ever encountered firmware, unlocking, or restoring Xiaomi devices, you’ve probably heard the term “boot.” But what does it mean in practice? In this article, we’ll take a closer look at what boot is on Xiaomi, what boot modes exist (including Fastboot and Recovery), how they work on the brand’s smartphones and smart TVs, and when you might need to interact with a bootloader.
The term “boot” refers to the process of initializing a device, from powering on to fully loading the operating system. On Xiaomi devices (and other Android devices), this process is controlled by a bootloader, which checks the integrity of the system, loads the kernel and transfers control of the OS. However, users often have questions: why the phone is getting stuck on the Mi logo, how to log into the Fastboot, or what to do if the device does not boot.
What is a bootloader on Xiaomi and why do you need it?
A bootloader is a low-level program that starts immediately after the device is turned on, and on Xiaomi smartphones and TVs, it performs several key functions:
- 🔹 Checks digital signatures of system files (protection against unauthorized changes).
- 🔹 Runs Recovery (Recovery Mode) or Fastboot (Firmware Mode).
- 🔹 Transfers control to the Android kernel or MIUI loading.
- 🔹 Blocks the installation of third-party firmware (if not unlocked).
By default, the bootloader on all Xiaomi devices is locked, and this is done to protect against malware and unskilled user activity, but blocking creates restrictions:
- 🚫 You can’t install custom firmware (like LineageOS or Pixel Experience).
- 🚫 You can’t get root access without unlocking it.
- 🚫 Limited access to some system settings.
Unlocking the bootloader is officially supported by Xiaomi, but requires a Mi Account and wait (usually 7-15 days).
Download modes: Fastboot, Recovery and EDL
Xiaomi devices support several special boot modes, each designed for specific tasks.
| Regime. | How to get in | Appointment | Limitations |
|---|---|---|---|
| Fastboot | Keeping food on. + Loudness down when switched on | Firmware, unlock the loader, recovery | Requires PC and drivers ADB/Fastboot |
| Recovery | Keeping food on. + Loudness up | Resetting settings, installing updates, backup | Limited functions in the drainage MIUI Recovery |
| EDL (Emergency Download) | Through test points or special teams | Restoration of “bricks”, firmware without unlocking | Requires an authorized Xiaomi account |
Fastboot is the most versatile mode, and you can use it to:
- 🔧 Install official or custom firmware.
- 🔓 Open the bootloader (fastboot oem unlock command).
- 🔄 Restore the device after failure.
Recovery comes in two types:
- 📱 Stock (from Xiaomi) – limited to basic functions (reset, install updates with the SD-map).
- 🛠️ Castomy (e.g., castom, TWRP) — Extended capabilities (backup, installation) ZIP-firmware).
EDL (Emergency mode is used when the device is not loaded even in the Fastboot. Access to it usually requires a physical connection to test points on the board or a special cable».
What's a brick?
How to unlock the bootloader on Xiaomi: step-by-step instructions
Unlocking the bootloader is a must for custom firmware or root access, and Xiaomi officially allows this procedure, but with a number of restrictions.
Linking your Mi Account to your device|Enable debugging on USB developer-setting|Download Mi Unlock Tool from the official website|Prepare. USB-cable (preferably original)|Charge the device to a minimum of 60%-->
Step 1. Linking your Mi Account
Go to Settings. → Mi Account → Sync and make sure your account is linked to the device. Without that, unlocking is impossible. Also enable Device Search in the security settings.
Step 2: Enable debugging over USB
Activate Developer Mode by pressing Version 7 times MIUI In Settings → About the phone. Then go to Settings. → Additionally. → For developers and include:
- 🔌 Debugging by USB
- 🔓 Unlocking OEM (if)
Step 3: Launch the Mi Unlock Tool
Download the utility from the official website, install it on your PC and launch it. Sign in with the same Mi Account as your phone. Connect the device in Fastboot mode. + Loudness down when switched on).
Step 4. Unlocking
In the utility, press Unlock. If this is your first unlock, the system will request a wait (usually 168 hours or 7 days).
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If the utility gives you an error called “Couldn’t unlock” or “Device not connected,” try using another one. USB-cable or port on PC. Also check if drivers are installed ADB/Fastboot.
What to do if Xiaomi is stuck on the logo (bootloop)
A situation where a Xiaomi device only loads to the Mi logo and doesn't go any further is called a bootloop.
- 🔄 Failed update MIUI.
- 🔧 Damage to system files after rooting.
- 📱 Failure after installing custom firmware.
- 🔋 Hardware problems (damaged memory).
Solutions:
- Hard Reset: Go to Recovery. + Volume up and select Wipe Data → Wipe All Data. ⚠️ Warning: This will delete all data on the device, including photos and apps, and if you had backup enabled in Mi Cloud, you can recover the data.
- Download the official firmware for your model from Xiaomi, unpack it and run it through the command: fastboot flash all name file.img
- Recovery through EDL. If the device does not respond to buttons, you will need an authorized Xiaomi account and the Mi Flash Pro program.
If none of the methods worked, the problem could be hardware (e.g., damaged flash memory), in which case, contact the service center.
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Before any firmware manipulation, always back up important data. Even official updates can sometimes lead to bootloop!
Boot on Xiaomi TV: Features and differences of smartphones
Xiaomi Smart TVs (Mi series) TV, Redmi TV) They also have bootloader and recovery modes, but they work differently than on smartphones:
- 📺 The bootloader cannot be unlocked officially (no tool like the Mi Unlock Tool).
- 🔄 Updates are installed automatically via the Internet or manually through USB.
- 🛠️ Recovery mode is started by a button on the remote or a combination on the TV itself.
How to Sign In to Recovery on Xiaomi TV:
- Turn off the TV.
- Press and hold the Menu button on the remote. + power button on the TV body.
- Hold for 10-15 seconds until the recovery menu appears.
The Recovery menu has options:
- 🔄 Reboot system now - reboot.
- 🗑️ Wipe data/factory reset - reset to factory settings.
- 📁 Apply update from USB — flash-refresh.
What to do if Xiaomi TV left out:
- Check the power (cable, socket, network filter).
- Turn off the TV for 5 minutes, then turn it on again.
- If you are stuck on the logo, reset through Recovery.
- If you do not respond to the remote, try connecting the keyboard or mouse on the USB.
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Some Xiaomi models TV (Like Mi. TV 4S) To enter Recovery, you need to hold the Volume button. + TV-frame + power button on the remote.
The risks and dangers of working with boot on Xiaomi
Interfering with a bootloader or firmware device always comes with risks, and these are the most common problems.
- 🧱 Turning the device into a “brick” – complete inoperability due to damage to the bootloader or system partition.
- 🔒 Blocking the Mi Account – when unlocking the bootloader, Xiaomi can temporarily block the account (for example, if fraud is suspected).
- 📵 Loss of warranty – Unlocking the bootloader or rooting will usually void the warranty.
- 🛡️ Security vulnerabilities – custom firmware or root access can open access to the device for malware.
How to minimize the risks:
- 📌 Use only official firmware from the Xiaomi site or proven custom (for example, Xiaomi.eu).
- 🔋 Do not interrupt the firmware process – it is almost guaranteed to lead to a brick".
- 🔐 Create backups through TWRP or Mi Cloud before any changes.
- 📖 Read the instructions for a particular model carefully – procedures may differ even for devices of the same line.
⚠️ Note: Some Xiaomi models (e.g. Redmi Note 10 Pro) POCO F3) unlocking the bootloader can cause the encryption to be blocked, and then the device will require you to enter a password every time you download, even if you reset!
Frequent Boot Mistakes and How to Fix Them
Even experienced users sometimes encounter errors when working with a bootloader or firmware, and consider the most common of them:
| Mistake. | Reason. | Decision |
|---|---|---|
| Fastboot: unknown command | Drivers not installed ADB/Fastboot or | Install Platform Tools and check your device’s connection |
| Device is locked in Mi Unlock Tool | The waiting period for unlocking (168 hours) has not expired | Wait for the specified time or check the binding of the Mi Account |
| Phone is not defined in Fastboot | Problems with USB-cable, port or drivers | Try another cable/port, reinstall drivers, check Device Manager |
| Invalid image format when running a firmware | Inconsistency of the firmware model of the device | Download the firmware specifically for your model (check in Settings). → The phone) |
Additional advice:
- 🔍 If the device doesn’t boot into Fastboot, try clamping the power. + Loudness up + Loudness down at the same time.
- 🔄 If the Fastboot firmware is interrupted, try using the Mi Flash Tool in clean all mode.
- 📡 If there is no network after firmware, check if modem and vendor files are installed.
⚠️ Note: On devices with MediaTek processor (e.g. Redmi) 9A or POCO C31) Fastboot requires Xiaomi account authorization, without which the device will not accept firmware commands!