Ratio Computers


The New OS
OS 4.0.54
is now available for

iX3M
series, iDive Sport series,
and iDive New Avantgarde series.

Connect your Ratio to the DiveLogger
to update your device,
for free.


Update your Ratio now
Click here to discover the new Support Area




What's new?


Update complete name: OS 4.0.54/0xx
This release includes improvements and bug fixes, including:

  • If the ascent speed alarm is activated and the computer switches in the ascent speed screen, it will back to the previous screen after a certain amount of time. (iX3M series only)
  • Improved RBT calculation in Multi-Transmitter Side Mount mode.
  • Improved calculation speed of the Planner in OC and CCR mode
  • Fixes an issue that could not allow the calibration of the Sensor board with some Oxy cells (for iX3M Reb only).
  • Minor system improvements.





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Previous Releases


Update complete name: OS 4.0.50/0xx
This release includes improvements and bug fixes, including:

  • Improved Multi-Transmitter mode.
  • Fixes an issue that could stop the update of iX3Ms that are updating from older OS versions.
  • Minor improvements to the charging system for some countries.
  • Minor system improvements.


Update complete name: OS 4.0.46/0xx
This release includes improvements and bug fixes, including:

  • New Power charge Management to handle the new smart USB chargers.
  • Improved the Color Coded LED Wireless Transmitter compatibility.
  • Improved auto-tank switch in multi-tank transmitter mode.
  • Fixes an issue that could display overrated otu or cns in the logbook on some units in CCR mode.
  • Fixes an issue that could display wrong GMT time in the logbook record.
  • Minor system improvements.


Update complete name: OS 4.0.44/0xx
This release includes improvements and bug fixes, including:

    > New features:
  • Multi transmitter for Air Integrated iDive and iX3M
    (up to 10 for Reb and Tech+, up to 3 for Deep and up to 2 for Easy.
  • Side Mount Multi-transmitter mode.

  • (for iX3M series only) 180° Flip screen function.
  • New, improved, automatic altitude detection.
  • Introduced the possibility to manually set the local sea-level mbar pressure value
    for a more accurate altitude detection
  • Introduced the battery recalibration procedure
  • Minor system improvements.


Update complete name: OS 4.0.38/0xx
This release includes improvements and bug fixes, including:

    > New features:
  • Average depth is now saved for each new dive directly in the iX3M/iDive log
  • Average depth is now shown in the iX3M/iDive logbook (only for the new logs)
  • (for iX3M series only) Planner now alerts with a colored line if PpO2 is above maximum threshold while planning an OC dive.

  • (for iX3M Reb only) Sensor board Oxygen calibration. It is now possible to manually set the % of oxygen (up to 100%) when calibrating Sensor Board sensors.
  • (for iX3M Reb only) Voting logic to validate the Sensor Board PpO2 readings
  • (for iX3M Reb only) Visual + vibration alarm on min or max PP02 threshold violation.
    > Improvements and bugfixing:
  • (for iX3M series only) Fixes an issue that may not allow to set the yellow color in the DISPLAY menu on some units.
  • (for iDive series only) In CCR mode the PpO2 value is now always shown in the main screen.
  • Fixes an issue that may not allow the unit to show the correct error message in the MIX CHECK app in case the (optional) Gas mix analyser has not been connected.
  • Fixes an issue that may not allow the unit to calculate the correct EPT (epatta) value in the MOON app.


Update complete name: APOS 4.0.26/0xx
This release includes improvements and bug fixes, including:

  • Improves TX ID values management
  • Fixes an issue that could display overrated otu or cns in the logbook on some units.
  • Fixes an issue that may not allow to use the deco planner in some situations and on some units.
  • Improved charge management
  • Minor system improvements.


Update complete name: APOS 4.0.20/0xx
This release includes improvements and bug fixes, including:

  • Improved charge and power management
  • Restored 50% He and added Pyle Deep Stop (Deep version only)
  • Minor system improvements.


Update complete name: APOS 4.0.8/0xx
This release includes improvements and bug fixes, including:

  • DiveLogger 4 compatibility
  • Ratio® CC Transmitter compatibility (for iX3M "Transmitter Ready" only)
  • Minor system improvements.


Update complete name: APOS 3.4.0/010
This release includes improvements and bug fixes, including:

  • Improved power management (about +3% autonomy)
  • Minor system improvements.


Update complete name: APOS 3.3.4/010
This release includes improvements and bug fixes, including:

  • Improved the support for "adaptive chargers" (5v-9v)
  • Fixes an issue on the name lablel of "Mix 10" in some units
  • Minor system improvements.


Update complete name: APOS 3.3.0/009
This release includes improvements and bug fixes, including:

  • Improved power management (about +5% autonomy).
  • Improved menu responsiveness speed.
  • Minor system improvements.


Update complete name: APOS 3.2.1/009
This release includes improvements and bug fixes, including:

  • New "Gas Blander" App for iX3M is installable using the DiveLogger App center.
  • Minor system improvements.


Update complete name: APOS 3.2.0/009
This release includes improvements and bug fixes, including:

  • Improves the management of the color personalization menu
  • Improves the altitude adjustment management.
  • Minor system improvements


Update complete name: APOS 3.1.5/009
This release includes improvements and bug fixes, including:

  • Improves the management of the charge
  • Improves battery life (about +5%)
  • Improves the Imperial system handle (ft)
  • Adds Imperial system to the GPS
  • Improves the Imperial system handle in the menus
  • Fixes an issue that could simulate the double push of a button in some menus.
  • Fixes an issue that allowed the start of the "demo mode" in some units.
  • Deco Stop menu steps now set to 1mt