If you're an owner of the Amazfit Active 2 (Square) smartwatch, there's a compelling reason to check your Zepp app today. Amazfit has begun a phased rollout of a significant software update, version 3.5.10.3, packed with features that elevate the device from a simple activity tracker to a sophisticated running coach and fitness companion. This update, released for the June 2025 model, delivers on user requests and sharpens the watch's competitive edge.
The latest enhancement proves Amazfit's commitment to supporting its devices long after launch, adding tangible value for users who chose the square-shaped variant over the Round or Premium Edition models.
From Casual Jogger to Data-Driven Athlete: New Running Dynamics
The headline feature of this update is the introduction of two advanced running metrics: Ground Contact Time and Vertical Oscillation. Previously found on high-end dedicated sports watches, these metrics provide a deeper insight into your running form, which is crucial for improving efficiency and reducing injury risk.
- Ground Contact Time (GCT): This measures how long your foot spends on the ground with each step. A lower GCT typically indicates a more efficient, spring-like running gait.
- Vertical Oscillation: This refers to how much you "bounce" up and down while running. Excessive vertical motion can waste energy; a lower, more controlled oscillation is a sign of an efficient forward propulsion.
By analyzing this data post-run, athletes can make tangible adjustments to their form, aiming for a smoother, faster, and less injury-prone stride. For more detailed insights on how Amazfit implements these features, you can check out the official Amazfit blog post about the October 2025 updates.
Capture and Share Your Progress with Ease
A highly requested quality-of-life feature has also arrived: built-in screenshot functionality. Now, capturing your latest personal best, a complex workout summary, or a unique watch face is as simple as pressing the two side buttons simultaneously. No more fumbling with a phone camera to share your achievements with friends or online fitness communities.
Expanded Workout Modes for Every Regimen
Recognizing the diverse ways people train, Amazfit has added three new dedicated workout modes to the Active 2 (Square):
- HIIT: Perfect for high-intensity interval training, offering precise tracking for periods of maximum effort and short recovery.
- HYROX Training: A dedicated mode for the popular fitness competition that combines running with functional workouts, catering to a growing niche of athletes.
- Ultra-Marathon: An essential for endurance runners, this mode is optimized for tracking activities that last for many hours, ensuring battery and data accuracy over extreme distances.
Refinements Across the Board
Beyond the major headliners, the update polishes the overall user experience with several smart additions:
- Jump Rope Reminders: Get prompts and tracking tailored for jump rope sessions.
- Improved In-Workout Controls: Features like "raise wrist to unlock" and direct button response make it easier to interact with the watch mid-exercise without breaking your rhythm.
- Bluetooth Heart Rate Sensor Icon: For users who prefer a chest strap or armband for ultimate accuracy, the watch now clearly displays an icon when it's using an external Bluetooth heart rate monitor as its data source.
- Reduced Audio Lag: Amazfit has specifically addressed audio synchronization, promising a better experience for those who listen to music or sports broadcasts during their workouts.
As with any major firmware rollout, some users on platforms like Reddit have reported minor hiccups during the installation process. If you encounter any issues, the r/amazfit subreddit discussion on the update can be a valuable resource for community-driven solutions.
How to Get the Update and a Note on Model Differences
The software version 3.5.10.3 is being delivered in stages to Amazfit Active 2 (Square) smartwatches. To check if it's available for you, open the Zepp app on your connected smartphone, navigate to your device settings, and look for a firmware update.
It's important to note that the Amazfit Active 2 (Square) operates on a separate software track from its Round counterparts. The Round models received their own similar, earlier update (version 6.3.10.4) back in October 2025. This distinction ensures that each model's unique hardware and form factor are supported with optimized software.
This substantial update reinforces the value proposition of the Amazfit Active 2 (Square), a feature-rich smartwatch that is often available for a compelling price point on Amazon. For existing users, it's like getting a new, more powerful watch for free, and for potential buyers, it makes the square-shaped wearable an even more attractive option in the crowded fitness tracker market.
