GARMIN Forerunner 405 Firmware Upgrades-The following lists of changes are based on information provided by GARMIN. Changes or improvements which we consider important or especially useful are shown highlighted.To view the current firmware version, complete the following steps:. Unlock the device by pressing the 'start/stop' button if necessary. Touch 'menu' on the bezel for more than 2 seconds. Select 'Settings'. Select 'System'. Select 'About'.
The system will display the firmware version at the second row ('Software Version'). Press the 'lap/reset' button to quit the screen.Each upgrade replaces the complete firmware in the GPS, which means you need to install only the version you wish to apply. There is no need to install any previous versions.There will be two updates sent to your watch. The first update will improve the reliability of software transfers from ANT Agent.
The second update includes the changes listed below for software version 2.40. The first update will take 2-3 minutes, and the second update will take 10-15 minutes.