Amazfit is continuing to refine the capabilities of its rugged wearable lineup, rolling out a significant firmware update for the T-Rex 3 Pro. The latest release, version 4.7.3.1, introduces a suite of fitness-centric enhancements and interface refinements designed to bridge the gap between basic activity tracking and professional-grade athletic data.
The update arrives as part of a rapid development cycle for the device. It follows only a few weeks after the release of version 4.6.5.2, which introduced the critical ability to measure lactate threshold—a key metric for endurance athletes to determine the intensity at which lactate begins to accumulate in the blood, signaling the transition from aerobic to anaerobic exercise.
For users, this means the smartwatch phare Amazfit s’enrichit de nouvelles fonctionnalités grâce à une mise à jour de l’application and firmware, specifically targeting those who use their devices for cross-training and high-intensity outdoor sports. The rollout is currently being deployed in stages, meaning users may not see the update immediately in their Zepp application.
Expanding the Fitness Ecosystem
One of the most impactful additions in version 4.7.3.1 is the expanded hardware compatibility. The T-Rex 3 Pro can now connect to third-party rowing machines that utilize the Fitness Machine Service (FTMS) standard. This allows the watch to act as a central hub for rowing workouts, capturing precise power and distance data directly from the machine rather than relying solely on wrist-based estimations.
For runners and trail enthusiasts, the update improves how performance is visualized during a workout. Users can now view equivalent pace data broken down by segment. This is particularly useful for trail runners who face varying elevations; by seeing segment-specific pace, athletes can better understand their effort levels across different terrains without the data being skewed by a single long climb or descent.
The update also addresses high-intensity interval training (HIIT) and functional fitness. The “As Many Reps As Possible” (AMRAP) mode, frequently used in HYROX and CrossFit-style workouts, has had its maximum duration extended to 99 minutes. This ensures that even the most grueling endurance challenges are tracked without the timer cutting off prematurely.
Interface Refinements and Navigation Logic
Beyond the fitness metrics, Amazfit has focused on the “quality of life” aspects of the user interface. A new toggle setting has been implemented, allowing users to switch rapidly between different status indicators on the watch face. This reduces the number of swipes required to check critical data points during a workout.
The navigation experience has also seen a targeted overhaul. The update resolves a specific frustration for hikers and outdoor explorers: the “missed turn” reminders. By optimizing the navigation logic, the watch provides more accurate and timely alerts when a user deviates from a mapped route. A dedicated “Navigation” section has been integrated into the training tracking page for quicker access to directional data.
In a small but practical change, the device’s battery manager has been updated to provide transparency regarding the integrated LED flashlight. Users can now see exactly how much power the flashlight is consuming, allowing for better energy management during overnight excursions or emergency situations.
Summary of Firmware Version 4.7.3.1 Changes
| Feature Area | Update Detail | Primary Benefit |
|---|---|---|
| Hardware | FTMS Rowing Machine Support | Accurate power/distance data |
| Running | Segment-based Equivalent Pace | Better trail performance analysis |
| Training | AMRAP Timer (up to 99 min) | Support for longer HIIT/HYROX sessions |
| UI/UX | Status Indicator Toggle | Faster access to watch face data |
| Battery | LED Flashlight Tracking | Precise power consumption monitoring |
Deployment and Installation
As is standard for wearable firmware, Amazfit is utilizing a phased rollout strategy. This approach allows the company to monitor for stability issues before the update reaches the entire global user base. The T-Rex 3 Pro, currently retailing for approximately $399.99 on major platforms, requires the Zepp app to facilitate the installation.
To check for the update, users should open the Zepp app, navigate to the profile section, select their T-Rex 3 Pro and check for “Firmware Update.” If the update is not yet visible, users are advised to wait for the gradual rollout to reach their region.
This series of updates suggests a strategic shift for Amazfit, moving away from simply providing “health snapshots” toward providing a comprehensive toolset for serious athletes. By integrating FTMS support and refining segment-based pace, the T-Rex 3 Pro is positioning itself as a viable alternative to more expensive sports watches in the rugged category.
The next expected checkpoint for T-Rex 3 Pro users will be the continued rollout of version 4.7.3.1 to all regions, followed by potential further refinements to the lactate threshold algorithms introduced in the previous cycle.
Do you use the T-Rex 3 Pro for trail running or rowing? Let us know how these new features impact your training in the comments below.
