Notebookcheck Logo

Garmin unofficially launches major new stable update for high-end smartwatches

Garmin will soon be officially rolling out System Software 21.25 to the Fenix 8 Pro and co.
ⓘ Garmin
Garmin will soon be officially rolling out System Software 21.25 to the Fenix 8 Pro and co.
Garmin has been spotted rolling out a new stable update to high-end smartwatches like the Fenix 8 Pro. Still unofficial for the time being, System Software 21.25 should introduce dozens of new features and bug fixes over System Software 20.29.

Garmin released a new beta update for the Fenix 8 and Fenix 8 Pro (curr. $1,199.99 on Amazon) at the end of last week. Also available for associated smartwatches like the Enduro 3, Beta Version 21.25 appeared to be v21.xx beta build before Garmin transitioned development to its stable software branch.

Based on previous rollouts, it seemed that Garmin would begin offering System Software 21.25 around Valentine's Day. Officially, System Software 20.29 remains the most recent stable update for Garmin's latest high-end smartwatches. However, it seems that the company has quietly started offering v21.25 as a new stable update.

For the time being, Garmin has not published a changelog. Nonetheless, multiple community members report that they have started receiving v21.25 despite never enrolling on Garmin's Beta Program. Thus, we suspect that System Software 21.25 will receive an official release within the next day or so.

The new update should bring over two-dozen new features to the Fenix 8 series, including Battery Manager, Course Planner and sleep monitoring improvements. Also, the volume of bug fixes that System Software 21.25 brings to the table should push its changelog beyond 100 lines long. Garmin will issue the new stable update in batches as an over-the-air (OTA) download.

Source(s)

Garmin (1) (2)

Please share our article, every link counts!
Mail Logo
Google Logo Add as a preferred
source on Google
static version load dynamic
Loading Comments
Comment on this article
> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2026 02 > Garmin unofficially launches major new stable update for high-end smartwatches
Alex Alderson, 2026-02-17 (Update: 2026-02-17)