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Amazfit adds new features to flagship smartwatch in update

Amazfit’s T-Rex 3 Pro smartwatch
ⓘ Amazfit
Amazfit’s T-Rex 3 Pro smartwatch
A new Amazfit smartwatch update, firmware version 4.8.3.5, is rolling out to some users. This update adds some mid-workout metrics to the wearable, as well as the ability to customize settings by workout type. Plus, it brings several other improvements to users of the T-Rex 3 Pro.

The Amazfit T-Rex 3 Pro smartwatch is receiving a new update: firmware version 4.8.3.5. It shares many similarities with the recently released update version 4.8.3.5 for the T-Rex 3.

According to the release notes for this new update, shared on the 4PDA forum, the Amazfit T-Rex 3 Pro gets new mid-workout data points. These are the remaining distance, remaining ascent and remaining descent, for either the final destination or the next waypoint. Users get new workout settings, with Always-on Display and other options now configurable by activity type. Plus, you can now view your heart rate zone on the watch during a workout.

Firmware version 4.8.3.5 also brings several optimizations to the T-Rex 3 Pro. The sensitivity of turn-by-turn reminders for route navigation has been improved, as has the user experience on the track page. Amazfit states that it has optimized the algorithm behind the VO2 Max calculation for more accurate insights. Plus, text related to route navigation is said to have been enhanced.

It is expected that firmware version 4.8.3.5 is rolling out to Amazfit T-Rex 3 Pro smartwatch (curr. $399.99 at Amazon) users in phases. Downloadable via the Zepp app, it is likely that the software will reach users in countries like the US, Canada and China first, with those in European countries receiving the update in the coming weeks.

The release notes for Amazfit T-Rex 3 firmware version 4.8.3.5
ⓘ 4PDA
The release notes for Amazfit T-Rex 3 firmware version 4.8.3.5

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2026 04 > Amazfit adds new features to flagship smartwatch in update
Polly Allcock, 2026-04-29 (Update: 2026-04-29)