Key Takeaways
1. The Amazfit Balance 2 smartwatch is receiving a new firmware update (version 3.43.0.3) aimed at runners.
2. New features include lactate threshold data collection and customizable smart Zepp Coach running training plans.
3. The update improves the sleep algorithm and enhances prompts for downloading golf course maps.
4. Issues with diving activity reminder settings and overall system stability have been addressed.
5. The update is being rolled out gradually, starting in the US, Canada, and China, with Europe to follow.
A new update is being distributed to owners of the Amazfit Balance 2 smartwatch. The last update for this device was in February 2026, when version 3.39.0.4 was released, introducing the Route Planning feature.
New Features for Runners
As shared by users on Reddit, the Amazfit Balance 2 is now getting firmware version 3.43.0.3. The release notes indicate that this update brings two significant features aimed at runners. The first feature allows users to collect lactate threshold data and conduct a lactate threshold test. This information can be useful for users to gauge their training intensity and endurance levels. The second new feature gives users the option to adjust their smart Zepp Coach running training plans, allowing them to modify their weekly training sessions or easily skip a day if necessary.
Improvements and Fixes
In addition to these new features, the 3.43.0.3 update reportedly enhances the sleep algorithm, improves prompts related to downloading golf course maps, and updates the segment count displayed on workout interval reminder pages. Furthermore, Zepp Health, the company behind the Amazfit brand, has addressed issues related to diving activity reminder settings and overall system stability. A full change log can be found below.
Usually, the updates are rolled out gradually to users of the Amazfit Balance 2 smartwatch (curr. $249.99 at Amazon). The initial rollout has likely begun in places like the US, Canada, and China, with an expansion into Europe anticipated in the next few days. Once it’s available in your area, you can download the firmware through the Zepp app.
u/gamefan5 via Reddit
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