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Updates & Downloads

Forerunner 745 software version 4.85 Beta

as of April 27, 2021

Download (17.92 MB)

View installation instructions


Change History

Changes made from version 4.20 to 4.85:

Changes made from version 3.40 to 4.04:

Changes made from version 3.20 to 3.22:

Changes made from version 3.00 to 3.09:

Installation Instructions

  1. Connect your Forerunner 745 to your computer using the USB cable.
  2. Download and unzip Place the GUPDATE.GCD file in the \GARMIN folder of your device's internal storage drive.
  3. Copy GUP3590.GCD from the RemoteSW folder to \Garmin\RemoteSW on the device.
  4. Disconnect your device from the computer, approve the update on the watch, and wait for the update to finish.
  5. If you would like to revert to the last public release software, place the GUPDATE-420.GCD file in the \GARMIN folder. Rename GUPDATE-420.GCD to GUPDATE.GCD before disconnecting your device. Copy GUP3590-500.GCD from RemoteSW\Downgrades to \Garmin\RemoteSW on the device and rename to GUP3590.GCD. NOTE: If you revert to an older version of software, all of your settings will be reset to defaults.