The bootloader on Xiaomi smartphones is a critical component that runs the operating system and controls the boot process. If it is damaged, the device can freeze on the Mi logo, go into a βbootloopβ or stop responding to the on button altogether, problems that often arise after a failed firmware, unlocking through the Mi Unlock Tool, an interrupted update, or experimenting with customized recaves (TWRP).
In this article, we will discuss 5 proven methods of recovering the bootloader, from simple (via Fastboot) to complex (manual flashing through EDL). All instructions are relevant for the models of Redmi Note 10/11/12, POCO F3/F4/F5, Mi 11/12/13 and other devices on the platform Qualcomm and Mediatek. If your smartphone does not turn on or stuck on the Fastboot screen, follow the step-by-step recommendations below.
1. Causes of damage to Xiaomi bootloader
Before you start to recover, it is important to understand what exactly caused the failure. Here are the top -7 reasons why Xiaomi bootloader may fail:
- π§ Unlocking through Mi Unlock Tool (especially if the process is interrupted in 99%).
- π± Unofficial backup firmware (TWRP) without first unlocking the bootloader.
- π Interrupted updates by air (OTA) or via the Mi Flash Tool.
- π» Errors when manually flashing through fastboot or EDL (e.g., incorrect firmware version).
- π Critical battery discharge during manipulation of system partitions.
- π οΈ Hardware malfunctions (damage to flash memory or eMMC controller).
- π² Conflict of Magisk modules or other root solutions after modification boot.img.
If your device does not respond to buttons, but when connected to a PC is defined as Qualcomm HS-USB QDLoader 9008 β this is a sign of hard brick, and you will need to restore through EDL. If the smartphone is loaded into Fastboot (screen with a rabbit and the inscription FASTBOOT), the chances of recovery without a service center are much higher.
β οΈ Warning: If you installed custom software (like LineageOS or Pixel Experience) before crashing, you can only get it back on the original firmware for your model by completely flashing it back, and using firmware from other devices (even from one line) will lead to hard brick!
Preparation for Recovery: What You Will Need
Before you start repairing the bootloader, prepare everything you need. Without these tools and files, the process can fail or worsen the problem.
- π₯οΈ Windows PC 10/11 (for Mi Flash Tool and QFil) or Linux/macOS (for fastboot).
- π Original USB- cable (better the one that came with the device).
- π Charged battery (at least 50%). If the smartphone is not turning on, recharge it when it is off for 15-20 minutes.
- π Firmware for your model. Download it from the official Xiaomi Firmware website or through XiaomiTool V2.
- π οΈ Tools: Mi Flash Tool (for Fastboot firmware), QFil or Mi Flash Pro (for EDL- mode), ADB & Fastboot (utilities from Google), Python 3.x (for unlock scripts).
For devices on Qualcomm (most Xiaomi), you will also need a file prog_emmc_firehose.mbn - it can be extracted from the firmware or found on the forums 4PDA/XDA. Mediatek needs a DA- file (Download Agent) and SP Flash Tool.
Method 1: Fastboot Recovery (for soft brick)
If your smartphone loads into Fastboot mode (keep Volume down + Power on), but doesn't start beyond the logo, this method should help. It's suitable for 90% of "soft brick" cases.
Instructions:
- Download the firmware for your model (select the Fastboot version, not Recovery) and unpack the archive into a folder without Cyrillic characters (e.g., C:\Xiaomi\proshivka).
- Install drivers: For Windows: download Qualcomm drivers and install them manually through Device Manager. For Linux/macOS: check that the device is defined by the lsusb command.
Connect your smartphone
Fastboot
fastboot devicesIf the device is displayed (e.g., 1234abcd fastboot) β you can continue.
Mi Flash Tool
- Select a folder with unpacked firmware.
- At the bottom of the window, select Clean all (full cleaning) or Clean all and lock (clean + lock bootloader).
- Press Flash and wait until it is completed (5-10 minutes).
After successful firmware, the smartphone will automatically restart. If the process is frozen by 99% or there is an error critical partition flashing is not allowed, then the bootloader is locked and you will need to unlock (see Method 4).
Make sure the firmware model matches the phone model |
Check battery power (minimum 50%) |
Disable the antivirus (it can block the Mi Flash Tool)|
Connect the cable to the back. USB-PC port (for stability)-->
β οΈ Warning: If the smartphone boots after the firmware, but requires you to enter a Mi Account (even if you haven't tied it) - this is an activation lock. It can only be removed through the official Xiaomi service with a purchase check.
Method 2: Manually stitching the bootloader through fastboot
If full firmware didnβt help or you only want to restore the bootloader (for example, after a failed TWRP installation), you can manually flash individual partitions. This method requires knowledge of fastboot commands and caution β an error can lead to a hard brick.
You will need files from the firmware:
- boot.img is the image of the bootloader,
- dtbo.img β configuration of devices,
- vbmeta.img is a metadata for integrity verification.
They are in the image folder of the unpacked firmware.
Instructions:
fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot rebootIf the device goes back to Fastboot after the reboot, try flashing recovery:
fastboot flash recovery recovery.img
fastboot boot recovery.imgCritical information: On some models (e.g. Redmi Note 10 Pro), only boot.img without vbmeta.img will cause the avb: verification failed error. Always flash both files together!
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If the device doesn't restart after the commands, try manually holding the Power button for 10-15 seconds. Sometimes fastboot sends the reboot command incorrectly.
5. Method 3: Recovery through EDL (for hard brick)
If the smartphone does not respond to buttons, does not load into Fastboot and is defined as Qualcomm HS-USB The QDLoader 9008 is a hard brick and can only be restored through emergency boot mode.EDLThis will require:
- π§ File prog_emmc_firehose.mbn (for your model)
Step-by-step:
- Install the QDLoader driver.
- Connect the device to the PC (it should be defined as Qualcomm HS-USB QDLoader 9008).
- Run QFil, select: Flat Build β specify the path to prog_emmc_firehose.mbn. Load XML β select the rawprogram0.xml and patch0.xml files from the firmware.
Download
If QFil issues a Sahara Communication Failed or Firehose Config Failed error, check:
- The correctness of the selected firehose file (it should be for your model and the version of the chipset).
- Quality USB- cable (try another port or cable).
- Turn off driver signatures in Windows (via bcdedit/set nointegritychecks on).
| The error in QFil | Possible cause | Decision |
|---|---|---|
| Sahara Communication Failed | Inappropriate firehose file or driver problems | Check the chipset model (Snapdragon 6xx/7xx/8xx) and download the correct.mbn. |
| Firehose Config Failed | Damaged XML- Firmware Files | Download the firmware or regenerate XML via XiaomiTool |
| Device not found | The device is not defined in the EDL | Try to pinch Volume up + Volume down when connected |
| Nand Flash Not Detected | Flash memory damage (eMMC) | Requires a replacement memory chip in the service center |
β οΈ Warning: The firmware via EDL resets all data on the device, including IMEI and SN. After recovery, check IMEI with the command *#06#. If it is missing (shown as 000000000000000), restore it via the SN Write Tool or contact the service.
Method 4: Unlock the bootloader before recovery
If you try to flash your device through Fastboot and you get Device is locked. Cannot flash images, you have the bootloader locked. Xiaomi blocks it by default to protect against unauthorized changes.
- Get permission from Xiaomi: Go to the official website and log in to your Mi Account. Link the device to your account (on your work phone: Settings β Mi Account β Mi Cloud β Find the device). Download Mi Unlock Tool.
Connect your smartphone
Fastboot
Mi Unlock Tool
Wait for the timer.
Unlock
If the timer is not reduced or there is an error Cann't unlock. Try again later:
- Make sure that your Mi Account is tied to your device for at least 30 days.
- Use the original cable and USB 2.0 port (blue USB 3.0 ports can cause errors).
What if the Mi Unlock Tool canβt see the device?
Bypassing the waiting period for unlocking (unofficial method):
If you need to unlock the bootloader urgently, you can use a bypass script (it does not work on all models).
- Download the bypass script.
- Connect the device to Fastboot.
- Run the script and follow the instructions.
β οΈ Risk: Unofficially unlocking a device can result in a Mi Account ban or a device being blocked via Anti-Rollback.
7. Method 5: Testpoint Recovery (for older models)
On Xiaomi devices until 2019 (e.g. Redmi Note 5/6/7, Mi 8/9), you can log into EDL via testpoint - special contacts on the board. This is true if the smartphone is not defined as QDLoader 9008.
Instructions:
- Turn off the device and remove the back cover (need a mediator or suction cup).
- Find two metal dots on the motherboard with an EDL or TEST POINT signature (usually next to the battery).
- Close them with tweezers or wires, simultaneously connecting USB-plug-in.
- The device should be defined as Qualcomm HS-USB QDLoader 9008 β after that you can stitch through QFil.
β οΈ Warning: Disassembling the device will void the warranty. If you're not sure about your skills, you'd better go to the service center.
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Testpoint is a last resort, and on newer models (Redmi Note 10+, POCO X3 Pro) this method doesnβt work because of the hardware protection.
8 What should I do if nothing has worked?
If all of the above methods do not work, the following problems may occur:
- π§ Hardware failure: Flash memory damage (eMMC or UFS) Power controller failure (device not charged) Chain failure on motherboard.
- π± Software lock: Anti-Rollback (backward protection to old firmware) Mi Account lock (requires official unlocking).
In such cases, it is recommended that:
- Contact the Xiaomi service center (if the device is warranty).
- Find a soldering wizard (to replace an eMMC or repair a board).
- Buy a donor fee (if the repair is not economically feasible).
Cost of repair in the service:
| Type of malfunction | Cost (β½) | Timeline |
|---|---|---|
| Firmware via EDL (no disassembly) | 1 500β3 000 | 1-2 hours |
| Replacement of eMMC/UFS (with data transfer) | 5 000β10 000 | 1-3 days |
| Recovery of IMEI and SN | 1 000β2 500 | 30-60 minutes |
| Repair of power chains | 3 000β8 000 | 2-5 days |