Fastboot on Xiaomi phones: a complete guide for beginners and advanced users

Fastboot mode on Xiaomi smartphones is a low-level tool that allows you to interact with the device at the firmware level even if the operating system does not boot. Many users come across this term when trying to unlock the bootloader, flash custom software or restore the brick after a failed update. But what is it? Why is Xiaomi so actively using this mode in its devices, unlike other brands?

In this article, we will discuss in detail how Fastboot works, what it is for the average user and developer, how to enter and exit this mode correctly, as well as what mistakes can occur and how to avoid them. Particular attention will be paid to Xiaomi models of recent years — from Redmi Note 12 to Xiaomi 14 — because they have their own nuances of working with Fastboot. If you have ever seen on the phone screen a frozen robot with an open stomach and the inscription FASTBOOT, then this article is for you.

What is Fastboot and Why You Need It on Xiaomi

Fastboot mode (translated as “fast boot”) is a protocol that allows you to communicate with the bootloader of an Android device via a bootloader. USB-It's not like you're running a normal system. MIUI, In Fastboot, you get access to the hardware of the phone at the command line level:

• 🔓 Bootloader unlock – a mandatory step before installing custom firmware.
• 📥 Firmware for official and unofficial images via fastboot flash.
• 🔧 Restore the phone after “bricking” (when the system does not load).
• 🔄 Reset to factory settings if standard Recovery is not available.
• 🛠️ Checks of the state of hardware components (for example, testing memory or module) NFC).

This mode is especially important on Xiaomi because the company actively blocks the bootloader on its devices. Without unlocking through Fastboot, you can not install, for example, LineageOS or Pixel Experience. Moreover, some models (for example, POCO F5 or Redmi K60) require confirmation of unlocking through the Mi Account — all this is done in Fastboot.

Fun fact: on older Xiaomi smartphones (until 2018), it took only a few seconds to unlock the bootloader, and now due to tightening security policies, the process can stretch to 72-168 hours of waiting (the so-called “unlock timer”), even if you did everything right.

How to Sign In to Fastboot on Xiaomi: 3 Proven Ways

There are several ways to enter Fastboot mode on Xiaomi — depending on whether your phone is working and whether you have access to settings. Consider all options, including “emergency” when the screen is unresponsive.

Method 1: Through a button combination (if the phone is turned off)

The most versatile method that works on 99% of Xiaomi, Redmi and POCO models:

1. Turn off the phone (press the power button and select Turn off).
2. Press the Power button + Volume down at the same time.
3. Hold on for 5-10 seconds until the Mi Bunny logo appears with the words FASTBOOT.

⚠️ Note: Some models (e.g. Xiaomi) 13T Or the Redmi Note 12 Pro.+) The combination may be different -- instead of Volume Down, you need to use Volume Up. If the first one didn't work, try an alternative combination.

Method 2: Recovery Menu (if phone is switched on)

If your Xiaomi is loading but you want to upgrade to Fastboot for firmware or unlock, do the following:

1. Turn on the phone and go to Settings → About the phone.
2. Click on the MIUI version 7 times to activate the Developer Mode.
3. Return to Settings → Additional → For developers and enable USB debugging.
4. Connect your phone to your PC, open the command line and type in: adb reboot bootloader

The phone will automatically reboot to Fastboot, which is convenient if you plan to work with ADB and Fastboot teams.

Method 3: Forced entry (if the phone is getting stuck)

If Xiaomi doesn’t respond to buttons or is stuck on the logo, try the hard way:

1. Connect your phone to charge (the battery should be at least 30% charged).
2. Press the Power button + Volume down for 15-20 seconds.
3. If the screen is out, release the buttons and press the same combination again.

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If the phone doesn’t respond to any combinations, try holding the power button for 30+ seconds – sometimes it helps to wake up the bootloader.

How to get out of Fastboot on Xiaomi: all possible options

Departing from Fastboot seems like a simple task, but in practice, many users face problems — the phone can hang on the FASTBOOT screen or reboot cyclically.

Method 1: Standard Resetting

If you just want to get back to normal:

• On the Fastboot screen, select Reboot (use volume buttons for navigation and power button for selection).
• If the menu is missing, press the Power button for 10-15 seconds.

Method 2: Through Fastboot commands (if connected to a PC)

If the phone is connected to a computer, open the command line and type:

fastboot reboot

If you need to boot into Recovery (for example, to reset settings), use:

fastboot reboot recovery

Method 3: Forced exit (if the phone is getting stuck)

If Xiaomi does not respond to commands:

1. Turn off the USB cable (if connected).
2. Press the Power button + Volume up for 20-30 seconds.
3. If it doesn’t work, wait until the battery is completely discharged (it can take several hours).

⚠️ Warning: If the phone comes back to the phone after leaving the Fastboot, it is a sign of a damaged bootloader.

Unlocking the bootloader on Xiaomi via Fastboot: step-by-step instructions

Unlocking the bootloader is a must for custom firmware, root rights, or modified cores. At Xiaomi, this process is strictly controlled by the company, so you have to go through a few steps.

Step 1: Preparation

Before unlocking:

Backup all data (photos, contacts, messages)| Charge your phone at least 60%| Make sure your phone has a Mi Account| Download and install Mi Unlock Tool on PC| Enable USB debugging and OEM unlocking in the developer settings-->

Step 2: Linking your Mi Account

Starting with MIUI 12, Xiaomi requires you to link your Mi Account to your phone.

1. Go to Settings → Xiaomi Account and log in.
2. In Settings → Additional → For developers, activate Mi Unlock Status.
3. Link the device to your account (may be required) SMS-confirmation).

Step 3: Unlocking with Mi Unlock Tool

Now connect your phone in Fastboot mode to your PC and run the Mi Unlock Tool:

1. Sign in to the program under the same Mi Account as on your phone.
2. Press Unlock and the unlocking process will begin.
3. If you have a waiting message (e.g., Wait 168 hours), you will need to wait for the time.

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Step 4: Checking the Unblocking Status

Once successfully unlocked, the phone will restart, and in Fastboot mode, the UNLOCKED message will appear at the bottom of the screen. If it's not there, repeat the process.

⚠️ Note: Some models (e.g. Xiaomi) 12S Ultra) after unlocking, you may need to re-assign your Mi Account in the settings. Otherwise, the phone will not boot.

Xiaomi Fastboot Firmware: When to Do It and How to Do It

Fastboot firmware is a "heavy artillery" for cases where standard upgrade methods don't work.

• 📉 The phone is not turned on or stuck on the logo MIUI.
• 🔄 You need to revert to the previous version of the firmware.
• 🛠️ Recover damaged system files.
• 🚀 Install custom software (for example, Xiaomi.EU or LineageOS).

What you need for the firmware

Step-by-step instructions for firmware

1. Download the firmware for your model (for example, Redmi Note 11 Pro+ 5G is codenamed peux).
2. Unpack the archive into a folder without Cyrillic characters (e.g., C:\MIUI\peux).
3. Launch the Mi Flash Tool, press Select and specify the path to the firmware folder.
4. Connect your phone in Fastboot mode to your PC.
5. In the program, press Refresh - should appear COM-port.
6. Select firmware mode: Clean all - complete cleaning (recommended when changing the version of MIUI), Clean all and lock - cleaning + lock bootloader (for official firmware), Save user data - data storage (not always stable).

Flash

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If the firmware is interrupted during the flash boot or flash system stage, never disconnect the phone from the PC! try repeating the process or check the integrity of the firmware files.

Fastboot Mistakes on Xiaomi: Causes and Solutions

Fastboot is not always a smooth experience, and most users experience errors due to firmware incompatibility, driver problems, or a damaged bootloader, and we'll look at some of the most common problems and their solutions.

Error 1: “Waiting for device” in the command line

The reason: PC doesn't see the phone in Fastboot mode.

Decision:

• Check the cable connection (try another USB port).
• Install Qualcomm or Mediatek drivers manually through Device Manager.
• Open the command prompt on behalf of the administrator and type: fastboot devices If the list is empty, the problem is in the drivers.

Error 2: "Flash is not allowed in Lock State"

Reason: The bootloader is locked and you are trying to flash custom software.

Solution: Unlock the bootloader through the Mi Unlock Tool (see section above).

Error 3: "Invalid sparse file format at header magic"

Reason: A firmware file or incompatible version is damaged.

Decision:

• Download the firmware again (check the MD5 hash sum).
• Use a different version of the Mi Flash Tool (for example, try 2018.5.4.0 instead of the last one).

Error 4: phone is stuck on startup Fastboot screen after firmware

Reason: Incorrectly selected firmware mode or damaged image.

Decision:

• Try re-sweeping in Clean All mode.
• If it doesn't help, use it. EDL-Mode (requires an authorized Xiaomi account).

⚠️ Warning: If the phone stopped turning on after firmware and doesn’t respond to Fastboot, it could be a sign of partition damage EFS (stored IMEI In this case, professional repairs will be required.

Fastboot vs Recovery vs EDL: What's the difference?

Xiaomi users often confuse the modes of Fastboot, Recovery and EDL. Let’s see how they differ and when to use which.

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FAQ: Frequent questions about Fastboot on Xiaomi