Updates & Downloads

Forerunner 645 Music, ANT/BLE/BT software version 2.70

as of April 26, 2018

Use Garmin Express to install this file.

(144 KB)

Notes:

• WARNING: If this software is uploaded to a device other than that for which it is designed, you will not be able to operate that device.
• If attempts to upload software fail, you may need to return the device to Garmin® for service.