Software updates - Suunto Nautic

2.55.46

Suunto Nautic - Release notes: 2.55.46 

This update brings new features, improvements and bug fixes. 

 
New Dive features:​ 

• New dive mode: CCR 
• Possibility to add CCR diluent and bailout gases 
• Changed the amount of maximum allowed gases from 5 to 8 
• CCR Setpoint setting: auto and manual  
• CCR functions during dive:  
  • Automatic setpoint change  
  • Setpoint alarms 
  • CCR switchwindow elements 
• CCR items to dive summary 
• Heart rate belt pairing  
• Allow < 18% Trimix gas mix for active agas in CCR and Multigas mode at the surface 

Bug fixes:  

Rain precipitation and wind sometimes 0  
Fix issues if switching between languages on first set up.  

The location icon occasionally disappear after panning the map 

When switching between views the screen experience some lag 
Wrong error message and icon if password didn’t match  

The flashlight quickly discharges to low battery 

Flashlight not working in factory setup 
Wrong icon for pairing new device  

Power consumption and charging optimization  

Extend the maximum decompression time to show value instead of  >99min  
The BLE chip does not always recognise clock correctly 

Sometimes tank pressure alarm acknowledgment changes switch-field selection 

Incomplete time points in tide chart 

The curve chart of the tide chart does not have color fill 
The current data line of the tide chart is too long 
After changing unit settings, the widget units are not switched 
Location display in tide widget is incomplete 
Bug that prevented auto-start to work from the feeling view 
Rounding error in GF99 calculations  

 
When using the tide function for the first time, the synchronization time is displayed abnormally 
Surface time shows always >99h if device has been powered off  
Surface time field was missing from algorithm off view 
The bearing pointer sometimes disappeared from compass switch window  

The OTU 250 alarm was triggered at 251 and CNS 80 at 81 
Wrong Traditional Chinese translation for "Device lock"  
Avg & max depth didn’t show any values in switch window after surface time ends 

After enabling airplane mode, the Wi-Fi switch button did not turn off. 
The password lock screen will wait for 60 seconds before returning to the control panel interface. 
Nautic map view shows grids when zooming too close 
The error icon on the password error message screen is displayed incorrectly. 
Fix how to show the name of a point of interest if too long and cannot be fully displayed 

The software update displays an up arrow icon at the top 
Bug that caused the button operation indicators to disappear when entering the map interface after switching the map style and directly selecting to pan the map 
Nautic was missing sync state indicator 
In the Chinese version, the tank pressure is displayed in English units as "psi". 
Wrong pressure unit shown when mixed unit setting used 
Add TTS value to delta and @ 5 values even if no deco 
Diveplanner didn’t show full data if there are a lot of decostops 
GF in switch window shows on gas after deco cleared 
Extend the dive planner timeout 
Bug that  showed GF99 1% at the surface 
Algorithm deviation alarm removed from Algorithm off mode 
Fix placement of update available banner  
Bug that kept gas switch icon visible after gas switch 
Planner last stop depth doesn't fit in spanish language 
Add new gas creates extra gas switch event 
Graphs should not be displayed in the log summary after a software update 

2.49.32

Staged update starting on February 13th 2026

This update improvements and bug fixes.

New dive features:

• Option to set dive algorithm off during dive

Improvements and bug fixes:

• Fix to saving the wearing direction setting after power off
• Fix to avoid problems in case of battery drain
• Fix an issue regarding compass bearing icon is not cleared

2.49.28

Staged update starting on January 23rd 2026

This update brings new features, improvements and bug fixes.

New Dive features:​

• Option to define separate units for depth, tank pressure, gas consumption, temperature
• Possibility to add GF99 and Surface GF value in switch window
• Option to see a tissue bar graph during dive
• Option to reset tissues
• Tide widget

Improvements and bug fixes:

• Localization fixes
• Compass bearing gets sometimes stuck
• Password lock bug fixes
• Wrong surface time after 48h of inactivity
• Fixes to visuals regarding decompression stops
• Helium not taken into account in tissue graph
• POI’s not working in Map
• Sidemount alarm not visible in Suunto app
• Fixes to showing tank pods when offline
• Ascent speed warning stuck on surface screen
• Fix timeout time in many menus
• Unified button hint visuals
• Compass mils degrees not cantered
• Fixes to dive planner when diving with algorithm off
• Fixes to icons in weather widget
• New certification markings
• Charging icon and charging state are not shown in dive screen, control panel and power saving screen
• A new gastime alarm was not shown on list
• Inconsistency in showing NX100 and NX99
• The water type in dive summary wasn’t changed when updated in the setting view
• Fix to gas change from gas menu
• Device didn’t go to power saving mode from planner views