If you wear an Amazfit T-Rex 3 Pro on your wrist, good news is heading your way. The company is currently rolling out a brand-new firmware update, version 6.4.16.3.
Instead of just fixing hidden bugs, this update brings several helpful tweaks and new features that make the watch smoother to use every day.
Better Tracking for Swimmers and Pickleball Fans
If you love hitting the pool, you will notice that your pace and stroke-rate charts look a lot cleaner now. Amazfit also improved how the watch counts your turns in the water, so your lap data should be much more accurate.
For sports fans, Pickleball players get a nice upgrade too. The watch now supports a swing count feature in Pickleball mode, letting you track your swings easily game after game.
Smarter Workouts and Health Features
Do you hate when your watch screen stays dark when you lift your wrist during a hard run? This update improves wrist-raise wake sensitivity, meaning the screen wakes up much faster when you need it mid-workout.
Health tracking got a major makeover as well. Cycle Tracking features a brand-new look with better period predictions. You can now use new Check-In options to log your symptoms, daily moods, and lifestyle habits quickly.
Weightlifters also get more control. A new toggle lets you turn Auto Grouping on or off during Strength Training workouts, so you can set things up exactly how you like.
More Customization for Explorers
Outdoor explorers will appreciate the extra touch of personalization. The update adds support for more waypoint icons and types, making it easier to mark and find your favorite spots on the trail.
When Will You Get It?
The update is rolling out in phases. That means some people are already seeing the update on their wrists right now, while others might need to wait a few extra days for it to pop up. Keep an eye on your Zepp app to grab it as soon as it arrives!
You May Also Like To Check Out: The New and Latest Smartwatches 2026
