Modern wearables require regular attention not only in terms of charging, but also in software matters. Owners of Xiaomi Mi Band 3 often face the need to install a new version of the firmware to access fresh dials, bug fixes or new tracking features, the process is not always smooth, especially when you consider that the model is no longer the newest on the market, and servers can work unstable.
In this article, we will go into detail all the steps necessary to successfully install updates. We will look at both standard methods through the official application, and more complex scenarios when the device “hangs” or refuses to connect. Proper preparation for the procedure is a guarantee that your fitness tracker will not turn into a “brick” with a black screen.
Before you start any manipulation, make sure that your smartphone is fully charged and the bracelet itself has at least 20-30% of the energy. It is critical not to interrupt the Bluetooth connection while writing data to the tracker memory chip, as this can lead to irreversible damage to the software module.
Preparation of the device and application Mi Fit
The first step is always to check the relevance of the software on the smartphone side.The Mi Fit app (or its new Zepp Life analog) should be the latest version available on Google Play or the App Store.The older versions of the client may simply "not see" the new service packs for the Mi Band 3, as communication protocols may have changed.
You also need to make sure that the Bluetooth connection is stable. Sometimes the Android or iOS system caches old data about connected devices, which prevents the correct transfer of a large amount of data.
- 📱 Open Bluetooth settings on your smartphone and find in the list of Xiaomi Mi Band 3.
- 🗑️ Click on Forget Device or Cancel Pair to delete old profile.
- 🔄 Reboot your smartphone to reset Bluetooth services.
- 🔗 Perform re-conjugation through the application.
Make sure the app has all the necessary permissions. Modern versions of Android require location access rights (GPS) even if you are not using navigation. Without this security flag, the app will not be able to scan the environment and transmit data to the wristband.
⚠️ Note: If you have clones or modified versions of Mi Fit installed (such as Notify for Mi Band), the update process may not be correct.
Checking the current version and searching for updates
Before you start the process, you need to know which version of the software is currently installed on your tracker, which will help you determine whether you really need an update or are already using an up-to-date build. Version information is deep in the device profile menu.
To get data, open the app, go to the Profile tab, select your Mi Band 3 image, and scroll to the bottom of the screen. There will be a "Software Version" item with a numerical designation, such as 1.0.9.86. Write down these numbers or take a picture of the screen.
Then you need to initiate a manual search for new versions, as the automatic notification may not come. The same profile menu where you watched the version should have a button "Check Updates" or "Update." If the button is inactive or hidden, try pulling the screen down for forced sync.
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Before you start searching for updates, turn on the “Do Not Disturb” mode on your smartphone and close the background applications so that the system does not reset the boot process due to a lack of RAM.
Sometimes the app shows that there are no updates, although they are already available on other devices, which may be due to regional distribution, in which case changing the region in the app settings to China or India helps, but after the update, it is better to return your region to the weather data and language correctly.
Step-by-step instructions for installing an update
The firmware process itself requires minimal action from the user, but maximum care. When you click the Update button, the app will start loading the data packet. The speed depends on your Internet connection, so using Wi-Fi is preferable to mobile traffic.
After downloading, the data will be transferred to the bracelet. The Mi Band 3 screen may go out or the Mi logo will go out. At this point, the device goes into a special recording mode.
☑️ Checklist before the start of firmware
During installation, the progress bar will move in snatch-offs. This is normal, because the data is recorded in sectors. Don't press the bracelet screen, shake it, or try to break the connection. The whole process takes 2 to 5 minutes depending on the amount of update.
Once installed, the bracelet will automatically reboot, and you will see the logo, then the standard dial, and the status in the app should change to "Update complete", and the version number will change to a newer one.
⚠️ Note: If during the update process (after 30-40% The application has made an error, don't panic. Often the bracelet remains in working condition but requires re-pairing. Don't try to try again immediately, wait. 10-15 minute.
Solving Common Errors During Updating
Unfortunately, the Xiaomi ecosystem is not without bugs, and users often encounter errors when trying to update the Mi Band 3. One of the most common problems is hanging out during the data transfer stage (for example, 4% or 99%).
If the update is stuck, try the following algorithm: First, completely close the Mi Fit app (unload from memory). Then turn off Bluetooth on your smartphone, wait 10 seconds and turn it on again.
The table below shows the code errors and methods of their elimination:
| Error Code/Symptom | Probable cause | Method of decision |
|---|---|---|
| Transfer failed / Transfer error | Unstable Bluetooth signal | Get closer to the bracelet, remove the phone from the case |
| Update failed / 99% | Lack of memory or packet failure | Reboot your phone, clear the Mi Fit app cache |
| Device not found | Bracelet in sleep mode or dissynchron | Touch the bracelet capsule to wake up, reconnect |
| Version mismatch | Conflict of server regions | Change the region in the app settings to China, update |
If none of these methods work, it is possible that the update file is corrupted when it is downloaded, in which case it helps to clean the application data (not only the cache, but the data, which will require a re-login) or reinstall the Mi Fit application itself.
What if the bracelet shows a black screen after the update?
Manual installation of firmware through APK-file
For advanced users who are not helped by official channels, there is a method of manual installation. APK-Firmware file for Mi Band 3 on third-party resources (for example, 4PDA or GitHub).
This method is risky and requires the installation of modified versions of the application, such as Notify for Mi Band. This application has a section "My devices" -> "Software Update", where you can select the downloaded firmware file manually.
The sequence of actions in manual firmware:
- 📥 Download the firmware file (usually the extension.bin) from a verified source.
- 📂 Save the file in the memory of the smartphone so that the application can find it.
- ⚙️ Open Notify for Mi Band, go to your device settings.
- 🚀 Select the "Update" option and specify the path to the file.
Using third-party tools gives you more control, such as the ability to roll back to an older version if the new one is unstable, but the responsibility for the device’s performance in this case lies entirely with the user.
⚠️ Attention: By downloading firmware from unverified sites, you risk infecting your smartphone with malicious code or permanently disabling the bracelet.
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Manual firmware is a last resort, and 90 percent of the time, the problem is solved by cleaning the app cache or changing the server region to China.
Recoiling of the version and restoration of efficiency
There are situations when the new firmware version contains critical errors, for example, it discharges the battery faster or counts steps incorrectly.
Officially, Mi Fit doesn't allow you to roll back the version, which would require third-party software or specific actions again, and one method is to completely reset the bracelet to factory settings through the device menu in the app, after which the system can suggest installing the latest stable version, which may differ from the one that caused the problems.
If the bracelet has stopped responding to commands but vibrates when charging, try a "hard reset." For the Mi Band 3, this sometimes works by mounting the bracelet on the charger and holding the touch area (although on a screen that's off, it's difficult to do this). A more reliable way is to leave the device to discharge to zero until it's completely turned off, and then charge to 100% without connecting to the phone.
Recovery often requires patience. Don't rush to throw the device away at the first mistake. Software failures in Xiaomi wearable electronics are often temporary and solved by cyclical reboot.