Updates & Downloads

Forerunner 405CX software version 2.40

as of July 28, 2011

Use myDashboard to install this file.

(783 KB)

View system requirements

Change History

Changes made from version 2.30 to 2.40:

• Fixed issue with some units getting stuck at 100% charged or 0% charged.
• Changed to record heart rate data even more frequently when GPS is off.
• Changed to stop auto scrolling when timer is paused.
• Fixed a few translation issues.

Changes made from version 2.10 to 2.30:

• Added power save countdown to warn user before watch goes to power save mode.
• Added a reminder to reset the current activity if it has been more than four hours since the timer was stopped.
• Updated start and end dates of daylight saving time in Australia.
• Added time zone for Santiago, Chile.
• Fixed issue with workouts where heart rate was always displayed as BPM even during a step based on heart rate as %Max or %HRR.
• Fixed issue where three-digit laps would cause the watch to crash if language was set to Danish.

Changes made from version 2.00 to 2.10:

• Fixed problem where extra calories could be added in biking mode when using heart rate-based calculation.
• Fixed problem where extra calories could be added in biking mode when the timer was stopped and restarted.
• Fixed problem where course goal time incorrectly included paused time.
• Improved reliability of software transfers from ANT Agent.

System requirements

1. IBM-compatible PC running Windows XP or later operating system and an available USB port.