A new software update for Amazfit smartwatches introduces enhanced map rendering, smoother navigation, and expanded compatibility with the screenless Helio Strap (Pro).
The T-Rex 3 is receiving a new software updateA new software update for Amazfit smartwatches introduces enhanced map rendering, smoother navigation, and expanded compatibility with the screenless Helio Strap (Pro).
Zepp Health has released software version 6.3.13.5 for the Amazfit T-Rex 3 (on Amazon), bringing bug fixes alongside notable functional upgrades. One key addition is a workout start-screen reminder to pair external accessories, such as chest-strap heart rate monitors, before beginning an activity.
Map features have also been refined. According to Zepp Health, contour lines are now clearer, and footpaths are easier to distinguish from roads. Sidewalk data for select major roads has been integrated, though it only appears at high zoom levels. Offline map downloads are now more convenient, as users can select larger geographical areas at once. Navigation usability has seen general improvements as well.
Furthermore, the update enhances integration with screenless Amazfit wearables, specifically the Helio Strap and Helio Strap Pro. Users can now configure these trackers directly from their smartwatch—enabling or disabling features like real-time heart rate broadcasting without pulling out their phone. Smartwatch alerts for low Helio Strap battery levels have also been added.
Amazfit T-Rex 3 (T-Rex Series)
Related ArticlesEditor of the original article: Silvio Werner - Senior Tech Writer - 17939 articles published on Notebookcheck since 2017
I have been active as a journalist for over 10 years, most of it in the field of technology. I worked for Tom’s Hardware and ComputerBase, among others, and have been working for Notebookcheck since 2017. My current focus is particularly on mini PCs and single-board computers such as the Raspberry Pi – so in other words, compact systems with a lot of potential. In addition, I have a soft spot for all kinds of wearables, especially smartwatches. My main profession is as a laboratory engineer, which is why neither scientific contexts nor the interpretation of complex measurements are foreign to me.
Silvio Werner, 2026-08-21 (Update: 2026-08-21)