(2.09 MB)

View installation instructions and system requirementsUse Garmin Express to install this file.


Changes made from version 3.50 Stable to 3.51 Beta:

  • Added support for ‚Find My Watch‘. (Garmin Connect Mobile App > More > Garmin Devices > Connected Device > Find My Device)
  • Fixed a potential issue where intensity minutes would reset at midnight for a certain population.
  • Improved the warning alert for the last length of a swim workout.
  • Updated the background color of the tracker widget sub-pages and made them consistent with other widgets.
  • Updated the Last Swim widget to display pace for open water swim activities.


  • Installation Instructions
  1. Connect your fenix 3 HR to your computer using the USB cable. Download and unzip
  2. Place the GUPDATE.RGN file in the GARMIN directory
  3. Copy and paste the ‚TEXT‘ folder in the GARMIN directory. Choose ‚Yes‘ when asked if you’d like to copy this new folder over the current TEXT folder.
  4. Disconnect from your computer and proceed through the update.
  5. If you would like to revert to the last public release software, follow the above steps, but place the gupdate_3.20.rgn file in the GARMIN folder. Rename the file to gupdate.rgn before disconnecting your device. NOTE: If you revert to an older version of software, all of your settings will be reset to Defaults.

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