Modern wearables require regular maintenance of software to properly operate all sensors. Owners of the Xiaomi Mi Band 4 fitness tracker often face the need to install a new version of the firmware to correct synchronization errors or get new dials, a process that does not require a computer and is performed exclusively through a smartphone.
The relevance of the software directly affects the accuracy of the pulse, steps and sensor response rate. If the device is unstable or discharges quickly, the first thing to check for system updates. timely installation of security patches and optimizations allows you to extend the battery life.
In this article, we will discuss in detail all the methods of firmware, possible problems with booting and how to fix them. You will learn how to properly prepare the gadget for the procedure and what to do if the process hangs on a certain percentage.
Preparation of the tracker for installing updates
Before any manipulation of the system software, you need to make sure that the device is ready for the procedure. The main condition for stable data transmission is a sufficient battery charge. If the battery is discharged below 20%, the process can be interrupted, which will lead to critical errors.
It is also important to check the stability of the Internet connection on your smartphone. firmware files can weigh from 1 to 5 MB, and communication interruption during download or installation is unacceptable.
⚠️ Warning: Don’t try to update the tracker if it’s connected to charging through a cheap one USB-a hub or low-cost power bank, a direct connection to the socket or a charged battery is preferable.
Make sure that the phone has all the necessary permissions for the companion app, particularly geolocation and Bluetooth access must be activated continuously, not just during use, which is key to successful synchronization.
It will not be superfluous to restart the smartphone before the procedure, this will clear the cache of the Bluetooth module and free up RAM, which will reduce the risk of software conflicts during the transfer of data to the bracelet.
Update via Zepp Life app (formerly Mi Fit)
The main and most reliable way to update is to use the official Zepp Life application, which is through this software the manufacturer distributes certified firmware versions, the process is fully automated and requires minimal user participation.
To start, open the app and go to the Profile tab. From the device list, select your Mi Band 4. If the device appears as "Disable", click on it to re-pair. Once you've successfully connected, the system will check for a new version of the software.
If an update is available, a notification will appear on the screen with the version number and description of the changes, usually indicated “Correct known errors” or “Improving Bluetooth Stability”, and you just need to click “Update”.
During the process, the bracelet screen may go out and light up again, and the vibration will give signals. Do not press any buttons on the tracker itself, or open other heavy applications on the phone.
Alternative method through the Notify for Mi Band app
If the standard Zepp Life app doesn’t see updates or gives an error, you can use a third-party tool called Notify for Mi Band. This is a powerful utility that often has access to update servers faster than official clients.
After installing and pairing the tracker with the application, go to the Settings section -> Update Mi Band. Here you can choose the source of the firmware: from the Xiaomi server or a local file.
- 📲 Open the profile menu in the app and select your bracelet.
- 🔄 Click on the "Firmware" or "Firmware" option».
- ⬇️ Select “Download from the server” and wait until the download is finished.
- ✅ Click “Install” and follow the process on the smartphone screen.
The advantage of this method is that it can roll back on the previous firmware version if the new one doesn’t work properly, but using third-party software always carries potential data privacy risks, although in the case of Notify they are minimal.
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Before installing firmware through third-party apps, take a screenshot of the current notification settings, as they may reset after flashing.
It’s worth noting that some features, such as installing third-party dials, are more convenient in Notify for Mi Band than in stock software, making the app popular among advanced users of the Xiaomi ecosystem.
Installation of custom dials and modified firmware
One of the main reasons users are looking for ways to upgrade the Mi Band 4 is to install custom dials. Standard functionality is limited, but there are modified versions of apps and firmware.
Unofficial dials often require upgrading the tracker firmware itself to a specific version that supports third-party fonts and icons.The process is similar to a standard update, but the firmware file (.bin) is downloaded manually.
⚠️ Warning: Installing custom firmware will void warranty and can turn a tracker into a brick.
Firmware files can be found on specialized forums such as 4PDA. Once you download a file, you need to put it in your phone’s memory and select it through the update menu in the app. It is important to choose a file that strictly matches your device’s model (NFC and regular versions are different).
In some cases, you need to unlock the tracker before you install the mods, either through special commands on the engineering menu or through configuration apps, and once you're successfully installed, you'll have access to hundreds of new interface designs.
Compatibility table of versions and functions
Different versions of the software offer different set of features, and below is a table that will help you understand whether to upgrade to the latest version or stay on the old one.
| POS version | Stability | Support for NFC | New dials | Battery consumption |
|---|---|---|---|---|
| 1.0.9.x | Tall. | Yes. | No. | Optimal. |
| 1.1.2.x | Medium | Yes. | Partially. | Medium. |
| 1.1.5.x | Tall. | Yes. | Yes. | High-pitched |
| 1.1.8.x (Beta) | Low. | Experiment | Yes. | Unstable. |
As you can see from the table, the latest beta versions may contain bugs. If you are critical to autonomy, it is better to stop at version 1.0.9.x, which is considered the most stable for everyday use without unnecessary decorations.
Users who want to pay for or open NFC locks are forced to upgrade to newer versions as security protocols change, but NFC functionality is often limited in regions outside China.
Common mistakes and ways to solve them
During the update process, users often encounter various errors, the most common being “Update failed” or 99% freeze, which can be caused by a weak Bluetooth signal or background processes of the phone.
If the update doesn’t start, try doing the following: turn off Bluetooth on your phone, turn off the tracker itself (if there’s an option on the menu), or simply put it away from your phone. Then turn on Bluetooth again and try to run the update.
☑️ Diagnosing Update Problems
Another common problem is the message that "Device not found." In this case, make sure the bracelet is not connected to any other phone.Mi Band 4 can only connect to one device at a time.
In rare cases, a complete reset of the tracker to factory settings through the menu of the bracelet itself helps. After reset, you need to re-conduct the pairing procedure in the application, and only then try to update the software.
What to do if the bracelet freezes after the update?
Frequently Asked Questions (FAQ)
Can I upgrade Mi Band 4 without a phone?
How long does the firmware process take?
Will the training data disappear after the update?
Why does the app say that the update has already been installed?
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The key to success is a stable Bluetooth connection and a charged battery. Don't ignore update requests, as they often contain fixes for critical bugs.
In conclusion, regular software updates are an easy way to keep your Mi Band 4 in top shape.By following the instructions and following the precautions, you can avoid most problems and enjoy the full capabilities of the gadget.