How to update the firmware of the Xiaomi Smart Bands?

You can check the updates by opening the [Mi Fitness] APP >> [Device] >> [Update]. If you find that the new version can be updated, tap the [Download] icon to download the upgrade package. After downloading the upgrade package, it will be automatically pushed to the band. After receiving the upgrade package, the band will automatically upgrade and restart.
Note:
When upgrading the band, the battery level needs to be maintained at 20% or above. During the upgrade process, the band needs to be kept connected to the phone, and it is best to keep the band near the phone. It is also important to keep the [Mi Fitness] APP running on the front end as much as possible.