Garmin Forerunner 955 Software Update 2025 Update. Garmin forerunner 955 received a firmware update version 20.29 on 18 september 2024. Garmin has released a new software update;

The latest version is reportedly playing havoc with some forerunner models; The update for the garmin forerunner 955 is currently available to members of the company’s public beta testing program, but is a release candidate (rc) version, which means.