Software version 3.9.4.4 adds new workout modes, zoom features, and navigation improvements—while Zepp OS 5.0 remains out of reach.
New Tools for Fitness Enthusiasts
Amazfit has rolled out software version 3.9.4.4 for its rugged T-Rex 3 smartwatch, delivering meaningful upgrades for athletes and outdoor users alike. The headline feature is the addition of a HYROX Training workout mode, reflecting Amazfit’s increasing alignment with competitive fitness trends.
- The HYROX mode now joins Cross Training and HIIT under a trio of workout styles:
- AMRAP (As Many Rounds As Possible)
- TABATA (High-intensity interval training)
- EMOM (Every Minute On the Minute)
These formats cater to high-performance users who follow structured interval and endurance training regimens.
Enhanced Navigation & Zoom Capabilities
The update also adds zoom functionality to the watch’s map interface—an essential addition for adventurers and runners navigating new terrain.
- Users can now zoom in on-screen maps, improving readability and focus.
- When zoomed in, the automatic heading tracking feature keeps your directional orientation consistent with your real-world path.
These features are designed to enhance real-time usability, particularly during outdoor navigation and trail running.
UI and System Optimizations
Version 3.9.4.4 brings several refinements to the smartwatch interface, helping users get more from the T-Rex 3’s core tools:
- Map interface now benefits from visual and usability improvements.
- Beep and vibration alerts have been tweaked for better clarity when following navigation cues.
- The Zepp Coach page—the AI-based fitness assistant—has also received minor usability updates.
- The Weather widget now displays nighttime conditions, adding a layer of detail useful for late-day planning.
Still on Zepp OS 4.5
Despite the feature upgrades, the T-Rex 3 remains on Zepp OS 4.5. Zepp Health recently introduced Zepp OS 5.0 on newer models like the Amazfit Balance 2 and Bip 6, but there’s no official timeline for a T-Rex 3 upgrade.
- Zepp OS 5.0 offers deeper integration with third-party apps, smoother UI animations, and improved power efficiency.
- Users will need to wait for a future update—or possibly a next-gen T-Rex model—to experience those changes.
Rollout and Availability
The version 3.9.4.4 update is rolling out in phases and may not be immediately available in all regions.
- Once live in your area, you can initiate the update via the Zepp app.
- The T-Rex 3 currently retails at $189.99 on Amazon, offering solid value for those seeking durability and outdoor performance features.
