Unlock Fastboot on Xiaomi: official and unofficial ways

Why you need to unlock Fastboot and what it threatens

Fastboot mode on Xiaomi smartphones is a special protocol for interacting with the device loader via a computer; it is blocked by the manufacturer by default to prevent unauthorized changes to system partitions. Unlocking allows you to install custom firmware (MIUI or AOSP), obtain root rights, restore bricks, and even change IMEI (on some models).

But there are risks: doing the wrong thing can turn a phone into a brick without being able to recover using standard methods; moreover, unlocking it will invalidate Xiaomi’s warranty and disable some security features like Find My Device and data encryption. In 2026, the company tightened requirements to allow Mi Accounts to be linked to the device for at least 72 hours (24 before).

If you decide to take this step, prepare thoroughly: check the compatibility of the model, stock up on the original. USB-Cable (preferably from the kit) and make sure the battery is at least 60 percent charged, the procedure takes 10 minutes to a few hours, depending on the model and method you choose.

Unlocking with Mi Unlock Tool

The safest (but not the fastest) method is to use the proprietary Mi Unlock Tool, which is suitable for most Xiaomi, Redmi and POCO models released after 2016, the main condition is that you must have a Mi Account tied to your phone at least 72 hours before the procedure begins.

Here's a step-by-step algorithm:

1. Activate USB debugging: Go to Settings → About Phone → MIUI Version and 7 times click on the line with the version to turn on Developer Mode. Then go back to Settings → Additional → For Developers and enable USB Debugging and OEM Unlock.
2. Link your Mi Account: In the same developer menu, find Mi Unlock Status and link your account. Without this step, the utility won’t start the process.
3. Download Mi Unlock Tool: The official version can be found on Xiaomi's website (authentication required). Use only the latest version - the old ones may not support new models.
4. Run unlock: Connect your phone in Fastboot mode (press Power + Volume down when the device is off), run the utility on your PC and follow the instructions.

Is Mi Account linked to a phone (minimum 72 hours) |

Is the phone charged (>60%) |

Are ADB/Fastboot drivers installed on PC|?

Downloaded the latest version of Mi Unlock Tool|

Is the antivirus disabled (can block the utility)

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⚠️ Note: If the utility produces a "Couldn't unlock" error with code 86006 or 86012, it means that the account binding period has not expired.

Once successfully unlocked, the phone will automatically reset to factory settings. All data will be deleted, so back up in advance through Settings → System → Backup.

Unofficial methods: bypassing the restrictions of Xiaomi

If the official method doesn't work (for example, because of the error "This device is locked" on older models), alternative methods can be used. They are more risky, but sometimes the only option.

1.Use of EDL-Emergency Download Mode (Emergency Download Mode)

EDL allows you to stitch the device around the locked bootloader, and you'll need to:

• 🔧 An authorized Xiaomi account (for new models) or EDL-cable (for old ones).
• 💻 Mi Flash Tool or QFil (for Qualcomm devices).
• 📄 Firmware in.tgz or.mbn format for your model.

Process:

1. Turn the phone to EDL (clasp Volume Up + Volume Down + Power off) and the screen will remain black.
2. Connect your phone to your PC – Qualcomm HS-USB QDLoader 9008 should appear in the Device Manager.
3. Start the Mi Flash Tool, select the firmware and press Flash.

⚠️ Attention: On Xiaomi models 12/13 newer EDL-The system is locked hardware, and the attempt to activate it without authorization can lead to a complete loss of the system. IMEI.

2. Exploitation through ADB (for older models)

On some devices (e.g. Redmi Note 4/5), you can exploit vulnerabilities in ADB to bypass locks.

• 📱 Included debugging by USB.
• 🖥️ Utility. ADB and Fastboot on PC.
• 🔓 Script for unlocking (for example, unlock_bootloader.sh).

Example of a team to check the status of the lock:

adb reboot bootloader


fastboot oem device-info

If the answer is Device unlocked: false, then the bootloader is blocked.

Keep in mind that informal methods can result in a ban on a Mi Account or a ban on IMEI. Use them only if the official method is not available.

Unlocking Methods Comparison: What to Choose

To determine the best way, evaluate your goals and risks, below is a table comparing key parameters:

For most users, the official method remains a priority – despite the expectation, it guarantees minimal risks. EDL-The mode is suitable for experienced users who prepare firmware for "brick" devices. ADB-Exploits are only relevant for enthusiasts working with older models.

Official (Mi Unlock Tool) |

EDL-regime|

ADB-exploit|

I haven't decided yet.

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What to do after unlocking Fastboot

Successful unlocking is just the first step, and now your device is vulnerable to unauthorized changes, so it's important to take security measures:

1. Install custom recovery: Popular options are TWRP or OrangeFox, which will allow you to backup and install firmware without risking data loss. Example of installation command: fastboot flash recovery twrp.img fastboot boot twrp.img
2. Download the latest version of Magisk from official GitHub and install via recovery.This will give you access to modules such as ViPER4Android (for sound) or Greenify (for battery optimization).
3. Turn off forced encryption: Some firmware (like LineageOS) may cause encryption to lag. To disable it, add forceencrypt= (empty value) to the fstab file.

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If the phone doesn't turn on after unlocking, try flashing stock firmware through the Mi Flash Tool in clean all mode.This often solves loading problems.

Remember: an unlocked bootloader makes your device vulnerable to attacks via USB (such as BadUSB).Never connect your phone to public charges or unknown PCs without first disabling Debugging over USB.

Common mistakes and their solutions

Even with the correct instructions, users face problems, and here are the most common errors and ways to fix them:

• 🔄 Mistake. 86006/86012 Mi Unlock: Reason: account binding has not expired (72 Solution: Wait or try to link an account on another Xiaomi device (sometimes bypassing works).
• 🔌 Phone is not defined in Fastboot: Check the cable (better use the original), install Qualcomm or MediaTek drivers manually, try another one USB-port (preferably) USB 2.0).
• 📵 After unlocking no network: most likely flew IMEI. You can restore it via the engineering menu (#4636##) or utility. SN Writer (requires authorization).
• 🔥 The device overheats after firmware: Blame incorrect firmware or lack of thermal paste (on some models, for example, POCO F3). Get back to the stock. MIUI Check the compatibility of the custom firmware.

⚠️ Warning: If the phone is unblocked and it says "This device is corrupted" when booting, the boot section is damaged. boot.img (file boot.img It should be from the firmware for your model!).

To diagnose problems, use the Fastboot log. To save it, do:

fastboot oem get_unlock_info > unlock_log.txt

File. unlock_log.txt will help determine the cause of the failure.

Xiaomi models with unlocking features

Some Xiaomi devices require a special approach due to hardware or software limitations, and here are the key nuances for popular models:

For models 2023-2026 (Xiaomi 14, Redmi Note 13), unlocking is complicated due to the new security policy HyperOS. In some cases, physical access to the test-point (a special point on the board for forced transfer to EDL) may be required.

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Before buying a used Xiaomi, check the status of the bootloader through the fastboot oem device-info command. If the device is already unlocked, this may mean that it was in repair or was used to test firmware.

FAQ: Answers to Frequent Questions