How to Sweat Xiaomi Mi Band 8: Official and Alternative Methods

The Xiaomi Mi Band 8 fitness bracelet is one of the most popular wearables on the market, but even it requires periodic firmware updates. New software versions bring bug fixes, power optimization, and additional features like support for new types of workouts or an improved heart rate algorithm. However, the firmware process can seem difficult, especially if you encounter it for the first time.

In this article, we will analyze all the current ways to update the firmware Mi Band 8 – from the standard OTA-Update via Mi Fitness app to manual installation via ADB We will focus on the nuances of unlocking the bootloader, the choice between official and custom firmware, as well as on typical errors that may occur in the process. If your bracelet began to glitch, quickly discharge or does not sync with your smartphone - most likely, the problem is solved by flashing.

Important: The firmware procedure for the Mi Band 8 differs from previous models (e.g., the Mi Band 7) due to the modified hardware and communication protocol. Don't use the instructions for older versions - this can lead to a device blink!

1. Firmware Preparation: What You Need to Know Before Starting

Before proceeding with the upgrade, make sure your bracelet and smartphone meet minimum requirements.Mi Band 8 firmware through unofficial methods can void the warranty, so weigh all the risks.Official updates through Mi Fitness are safe, but don't always contain the latest fixes.

The main conditions for successful firmware:

• 📱 Smartphone on Android 8.0+ or iOS 12+ with Mi Fitness installed (version no lower than 5.12.0).
• 🔋 Charge bracelet at least 50% (with manual firmware - 100%).
• 🌐 A stable Internet connection (for the OTA-updates) or PC with ADB (manually).
• 🔐 Mi Account is tied to the bracelet (for official updates).

If you plan to install custom firmware (such as Amazfit Mod or Notify & Fitness for Mi Band), you will need to:

• 🔓 Unlocked loader (bootloader) bracelet.
• 💻 Computer with drivers installed ADB and Fastboot.
• 📁 Backup copy of the original firmware (in case of rollback).

⚠️ Note: Firmware through unofficial sources may result in loss of sensor functionality (e.g, SpO₂ or stress test) or unstable bracelet. Before installing custom software, check the reviews of a particular version on the forums 4PDA or XDA Developers.

2. Official update via Mi Fitness (the safest method)

The standard way to update the Mi Band 8 firmware is through the Mi Fitness app, which is a low-tech, low-tech, low-end method for most users, and is spread in stages, so if the new version isn't available in your area, you'll have to wait or use alternative methods.

Step-by-step:

1. Open the Mi Fitness app and connect the bracelet to your smartphone.
2. Go to Profile → Mi Smart Band 8 → Update firmware.
3. If the update is available, click Download and wait for the download to complete.
4. Once downloaded, the bracelet will automatically restart and install a new firmware. Don't turn off Bluetooth during the process!

Speed of propagation OTA-For example, Mi Band 8 Pro gets updates earlier than the standard version. If the update button is inactive, try the following steps:

• 🔄 Reconnect the bracelet to the application (profile) → Disable the device → Reconnect).
• 📱 Update the Mi Fitness app to the latest version.
• 🌍 Change the region in your Mi Account settings to China or India (sometimes updates appear there earlier).

⚠️ Warning: If after the upgrade the bracelet began to discharge quickly, reset to factory settings (Settings) → Reset in the Mi Fitness app. This helps 80% of the time.

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Officially OTA-updates are the most reliable way, but they can be delayed for 1-3 months depending on the region.

3. Handheld firmware via ADB: for power users

If OTA-Update is not available or you want to install a specific version of the firmware, you can use the manual method through ADB (Android Debug Bridge: This method requires a computer and basic command line knowledge, but allows you to bypass regional limitations.

Tools required:

• 💻 Windows computer 10/11 or macOS/Linux.
• 🔌 Bracelet cable (using Mi Band 8 charging cable with modified connector or adapter) USB-UART).
• 📦 Archive with firmware in.fw or.bin format (can be downloaded on XDA Developers).
• 🛠️ Utilities. ADB Fastboot (part of Android) SDK Platform-Tools).

Step-by-step:

1. Connect the bracelet to your computer via cable. This may require disassembling the strap and soldering the contacts to the USB-UART adapter (spinning scheme: TX → RX, RX → TX, GND → GND).
2. Open the command line (cmd) and check the device connection: adb devices If the bracelet is determined, you will see its serial number.
3. Transfer the bracelet to firmware mode: adb reboot bootloader
4. Sweep the firmware file (replace firmware.fw in your file name): fastboot flash firmware firmware.fw
5. Reboot the device: fastboot reboot

Not all versions of the Mi Band 8 support firmware through ADB without first unlocking the bootloader. If a FAILED (remote: locked) error appears after the fastboot flash command, you will need to unlock the bootloader (instructions in the next section).

Download firmware for your model |Install ADB|Install drivers Check bracelet charge (100%) |Prepare USB-UART adapter (if necessary) |Prepare the current firmware backup-->

Unlocking the bootloader Mi Band 8: risks and instructions

The Mi Band 8 bootloader is locked by default, which protects the device from unauthorized changes, and unlocking is required to install custom firmware or manually update via Fastboot.

• ⚠️ Loss of warranty (if the device is under warranty).
• ⚠️ The possibility of a brick (turning the bracelet into a “brick”) in case of errors.
• ⚠️ Certain functions (e.g, NFC or SpO₂) They may stop working.

To unlock the loader will require:

1. Apply for unlocking through the official Xiaomi website (you need a Mi Account tied to the bracelet).
2. Connect the bracelet to your PC in Fastboot mode (hold the button on the bracelet for 10 seconds when connecting to USB).
3. Execute the unlock command: fastboot oem unlock On the bracelet will appear a warning - confirm the unlock button.

Once the bootloader is unlocked, the bracelet will reset to factory settings, and the original bootloader can only be restored through the Xiaomi service center.

5. Custom firmware for Mi Band 8: pros and cons

Alternative firmware, such as Amazfit Mod or Notify & Fitness for Mi Band, extends the bracelet's functionality but has limitations, such as adding support for Google Fit, new dials or notifications from third-party apps, but disabling some of Xiaomi's original features.

The most popular custom firmware for Mi Band 8:

Installation of custom firmware is usually done through special utilities, such as Mi Band Tools or Gadgetbridge.

1. Download the firmware file (.fw or.bin) and the installation utility.
2. Connect the bracelet to your smartphone via Bluetooth.
3. In the utility, select the option Install custom firmware and specify the path to the file.
4. Wait until the process is complete (the bracelet will reboot several times).

⚠️ Note: After installing custom software, you may need to re-assign the bracelet to your Mi Account. If you have a Device not bound error, reset via Gadgetbridge (Settings) → Reset).

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Before installing custom firmware, check that it is compatible with your Mi Band 8 (standard or Pro) version. Some firmware only works on Chinese versions of the bracelet (CN in serial number).

6. Typical firmware errors and their solutions

Even if you follow the instructions, you can make mistakes, and here are the most common problems and ways to fix them.

If the bracelet has stopped responding to the button or is not detected by the computer:

1. Connect it to charging for 30 minutes (even if the indicator is not on).
2. Press and hold the bracelet button for 15-20 seconds for forced reboot.
3. If it doesn’t work, try flashing through Fastboot using the test mode (fastboot oem edl command).

In extreme cases, if the bracelet is fully "bricked", you can try to restore it through EDL-This requires a special cable and firmware in.mbn format. Instructions and files can be found on the Internet. 4PDA Theme of the Mi Band 8.

7. How to roll back firmware to the previous version

If the bracelet becomes worse after the update (for example, it discharges quickly or displays data incorrectly), you can return the previous firmware version.

• 📁 Backup copy of the old firmware (if it is not, download from the XDA).
• 💻 Computer with ADB and drivers.
• 🔋 Bracelet charge of at least 80%.

Instructions for rollback:

1. Connect the bracelet to the PC in Fastboot mode.
2. Fastboot Flash Firmware: Fastboot Flash Firmware old_version.fw
3. Reset your settings: fastboot erase userdata
4. Reboot the bracelet: fastboot reboot

After the rollback, you may need to re-assign to your Mi Account. If the bracelet is not synced with the application, remove it from Mi Fitness and reconnect it.

⚠️ Note: A rollback to a version older than 1.10.0.0 may cause new features (e.g. AFib monitoring) added in late updates to fail.

FAQ: Frequent questions about Mi Band firmware 8