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Updates & Downloads


Forerunner 645 Music software version 3.11 Beta

as of April 18, 2018

Download (6.76 MB)

View installation instructions

Notes:


Change History

Changes made from version 3.10 to 3.11:

Changes made from version 2.40 to 2.50:


Installation Instructions

  1. Connect your Forerunner 645M to your computer using the USB cable.
  2. Download and unzip Forerunner645MBeta.zip. Click on the Beta folder. Place the GUPDATE.GCD file in the \GARMIN folder of your device's primary internal storage drive. Place the GUP2887_FORCE.GCD in the \GARMIN\REMOTESW folder of your devices internal storage drive.
  3. Disconnect your device from the computer, approve the update on the watch, and wait for the update to finish.
  4. If you would like to revert to the last public release software, download and unzip Forerunner645MBeta.zip and click on the Public folder. Place the GUPDATE.GCD file in the \GARMIN folder of your device's primary internal storage drive. Place the GUP2887_FORCE.GCD in the \GARMIN\REMOTESW folder of your devices internal storage drive. Disconnect the device. NOTE: If you revert to an older version of software, all of your settings will be reset to defaults.