Suunto Nautic S Software Update
Enjoy the convenience of over the air software updates via Suunto app so that your Suunto Nautic S always has the latest and greatest software.
Over the air software update
When an update is available and your watch is connected with Suunto app, the software update will be downloaded to the watch automatically.
Once the software is downloaded to your watch, the watch will update itself during the night as long as the battery level is at least 50%.
If you want to install the update manually before it happens automatically during the night, navigate to Settings > General and select Software update.
Release notes
2.54.12
Update on 16.6.2026
This update brings new features, improvements and bug fixes.
New Dive features:
- Helium gas option to Multigas mode
- User defined remaining gas time alarm when diving with Suunto Tank POD
- Dynamic apnea mode (Freedive pool) mode to measure distance of dive
- Watertype setting for freedive modes
- New switchwindow data fields: GF 99, Surface GF, Ascent speed (numerical value)
- Enable HR belt pairing
- Low PPO2 alarm
Improvements and bug fixes:
- Improved surface view for freedive to show max depth and dive time of last dive
- New gas switch hint icon for multigas mode when a better gas is available
- New e-label
- Option to define different audio and vibration options for mobile notifications
- Option to define different audio and vibration alerts for system wide alerts
- Advanced unit settings to define metric or imperial settings for individual units
- Bug that cut the dive graph before scrolling in dive summary
- Revert the start depth range to start from 0.3m in freedive activities
- Bug that caused wrong low battery color
- Bug that caused wrong total dive count
2.51.10
Staged update starting on February 13th 2026
This update brings new features, improvements and bug fixes.
New Dive features:
- Tide widget
- Customization of switchwindow and arches for dive modes
- Dynamic depth graph to dive summary Option to configure a stopwatch to dive views
- Possibility to link two tank pods to same gas If two tank pods are linked to same gas, the tank pressure field will show two tank pressures during dive
- Option to set a pressure difference alarm when diving sidemount
- Support for new dive watch face (available in Suunto app)
Improvements and bug fixes:
- Localization fixes
- Snorkelling max depth was missing from summary
- Algorithm deviation icon not showing on screen after software crash Issues with surface time arch
- Reduce the time of the no-fly icon
- Tank pod icon showing in pre-start view even if offline
- Issues with wifi and maps download
- Memory optimization
- Bearing didn’t clear after exiting Scuba dive
- Adding e-labels for certification
- Improvement to tank pressure arch
- Surface time sometimes showing wrong values
- Transition optimization in menu items
User guide for Suunto Nautic S
User guides provide a comprehensive overview of product features, how to use them, as well as handling guidelines and technical specifications.
