Suunto Nautic Software Update

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