How to connect Xiaomi to your computer via Fastboot: full instructions with error solutions

Why you need Fastboot Mode on Xiaomi and when to use it

Fastboot mode is a special diagnostic mode on Xiaomi smartphones that allows you to interact with the device at a low level through a computer. Unlike a regular USB connection, in this mode you get access to the system parts of the phone, which is necessary for unlocking the bootloader, firmware through the Mi Flash Tool, recovery from crashes or install custom recoveries like TWRP.

When might you need to connect to Fastboot? First, if your Redmi Note 12 or POCO X5 stopped booting due to a failed update. Second, if you need to unlock the bootloader before installing global firmware (for example, switching from the Chinese version of MIUI to the European version); Third, to roll back to the previous version of the software if the new one is unstable. It is important to understand that operations in Fastboot can lead to a loss of warranty and complete data cleanup if it is about unlocking or reflashing.

The difference between Fastboot and Recovery mode: in Recovery you control your phone through a sensor or volume buttons, and Fastboot requires a mandatory connection to the PC and the use of commands. ADB/Fastboot. For example, to reset Xiaomi. 13T before the factory settings, enough Recovery, but to install the custom core will need just Fastboot.

Preparing Xiaomi Phone for Fastboot Connection

Before you put Xiaomi into Fastboot mode, follow a few critical steps: First, check the battery level – it should be at least 50%. When the charge is low, the phone can shut down during operation, which will lead to a software “brick”.

Then activate the debugging over USB:

1. Go to Settings. → The phone.
2. Click 7 times on the MIUI version to enable the developer mode.
3. Back to Settings → Additionally. → For developers.
4. Activate USB Debugging and OEM Unlock switches (on some models, such as the POCO F5, the last item may not be available).

If you plan to unlock the bootloader, link your Mi Account to your device: Settings → Xiaomi Account → Data Sync. Without this step, the official Unlock Tool will not allow the process to continue.

Battery charge ≥50%|Debugging is on. USB|Mi Account is tied to the device|Installed drivers on PC|Firmware downloaded (if needed)-->

Installation of necessary drivers and tools on PC

Without the right drivers, Windows won’t recognize Xiaomi in Fastboot mode. Download the official Mi USB Driver package from Xiaomi’s website (the “Tools” section). For POCO models, you may need a separate driver – look for it on forums like XDA Developers or 4PDA.

After installing drivers, check their work:

1. Connect your phone to your PC in Fastboot mode (how to do this in the next section).
2. Open Device Manager (Win + X → Device Manager).
3. In the "Ports (COM and LPT)" section, the Android Bootloader Interface or Xiaomi Fastboot device should appear.

If the driver is undecided, update it manually:

• 🔹 Download the archive with drivers and unpack it.
• 🔹 In Device Manager, right-click on an unidentified device → Update the driver → Perform a search on this computer.
• 🔹 Please indicate the path to the unpacked folder with drivers.

Also install Minimal ADB and Fastboot (a lightweight alternative to the full Android SDK) or Google’s full Platform Tools package.

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If Windows blocks driver installation, temporarily disable digital signature verification: restart your PC with Shift key pressed, select Diagnostic → Additional settings → Boot options → Reboot, then press F7 (Disable Mandatory Driver Signature Verification).

How to Transform Xiaomi into Fastboot Mode: 3 Ways

The most reliable method is hardware. Turn off the phone, then press and hold the power button + volume down button for 10-15 seconds until a screen that says FASTBOOT and a picture of a rabbit in a hat appears (mode logo). On new models, such as the Xiaomi 14, you may need to first press the volume up and then add a power button.

The second way is through ADB (if the phone is on and USB debugging is activated):

adb reboot bootloader

This command will restart the device directly to Fastboot. Make sure that in Platform Tools or Minimal ADB you run the command prompt on behalf of the administrator.

The third method is through the Recovery menu:

• 🔄 Turn off the phone, then press the power. + Volume up to enter Recovery.
• 🔄 Select the Reboot option → Fastboot (navigation with volume buttons, confirmation - power button).

Connection check and basic Fastboot commands

After you switch to Fastboot, connect Xiaomi to your PC via the original cable (it’s better to use the USB 2.0 port on the back of the system unit – it’s more stable than USB 3.0). Open the command prompt in the ADB folder (click Shift + right mouse button → Open the PowerShell window here) and type:

fastboot devices

If the connection is successful, you'll see the serial number of the device. If the list is empty,

• ⚠️ Check the cable and port USB (Try another cable, preferably original from Xiaomi).
• ⚠️ Reinstall the driver as described above.
• ⚠️ Disable the antivirus – it can block the ADB.

The main Fastboot commands for Xiaomi:

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The fastboot oem unlock command unlocks the bootloader, but erases all data on the device. Use it only after you back it up!

Common mistakes and their solutions

A waiting for device error in the command line means that the PC can't see the phone.

• 🔌 Faulty cable or port (try it out) USB-feed-in).
• 🔌 Drivers not installed (check Device Manager).
• 🔌 There's no debugging. USB (Turn it on beforehand!).

The FAILED error (remote: 'Flashing is not allowed in Lock State') appears when you try to flash a locked bootloader.

1. Unlock the bootloader through the Mi Unlock Tool (requires a tied Mi Account).
2. Wait 7-30 days (on new models Xiaomi has protection against instant unlock).

If the phone doesn't respond after the commands, try a "hard" reboot: press the power button for 20-30 seconds. On some models (for example, Redmi K50) the combination Power + Volume up + Volume down helps at the same time.

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On Windows 11 laptops, it sometimes helps to turn off the Quick Start function in power settings. Go to Control Panel → Power Power → Power button actions → Change settings that are not available now and uncheck the tick from Enable Quick Start.

Safety and safety precautions when working with Fastboot

Fastboot mode provides low-level access to system partitions, so errors here can turn Xiaomi into a brick. For example, the fastboot erase system command without further firmware will make the phone inoperable. Always double-check commands before executing.

⚠️ Note: On models with a Qualcomm Snapdragon processor (such as the Xiaomi 12 Pro), incorrect mod or core firmware can lead to hardware locking EDL (Emergency Download Mode, which requires an authorized Xiaomi account or a service center to exit.

The following actions will irreversibly delete the data:

• 🗑️ Unlock the bootloader (fastboot oem unlock).
• 🗑️ Firmware via Mi Flash Tool with clean all option.
• 🗑️ Fastboot erase userdata or fastboot erase cache.

Before any manipulations in Fastboot:

1. Create a backup with TWRP or Mi PC Suite.
2. Make sure the firmware version is compatible with your model (check out the Xiaomi Firmware Updater).
3. Use stable versions of the tools (avoid Mi Flash Tool betas).

FAQ: Frequent questions about Xiaomi's connection via Fastboot