Updates & Downloads

Forerunner 945 software version 4.29 Beta

as of March 25, 2020

For any issues that you encounter please fill out the form included in the download and attach it to an email to [email protected] Please note that you may not get a response to the email unless we need more information on the issue you report.
Although this software is believed to be reliable, it has not yet been released for production and should be used at your own risk.

Improvements to GPS
Fixed training modes (workouts, intervals, set a target, etc.) in Virtual Running to allow connection to phone app
Changed filtering of activities for Race an Activity. List of activities is now narrowed to those within the same general sport type.
Fixed missing auto-run setting in Ski
Improvements to rep-counting
Improvements to floor-climb when the user is jogging up/down stairs
Added SkiSkate profile
Added BackCountry Ski profile
Improvements to music playback/sync/providers
Improvements/fixes to payments
Made several improvements to Breathwork
Made several WiFi related improvements
Various other fixes and improvements

Add new Virtual Run activity profile. This enables broadcast of speed and heart rate information to virtual running applications such as Zwift.
Add Widget Glances, a new way to view widget information. The option to enable is found in the Widgets menu.
Add Low Heart Rate to the Abnormal Heart Rate Alert feature.
Various improvements for battery performance.
Fix an issue that was causing loss of treadmill calibration data. For best results, perform an outdoor run before your first treadmill activity.
Improvements to breathworks
Miscellaneous bug fixes and improvements.

Add Garmin Swim 2 Features: Advanced Swim Workouts, Auto rest, Critical Swim Speed, Swim Pacing Alerts
Added all-day respiration, respiration widget, and breathwork activity
Improved treadmill calibration
Added Pilates
Improvements to audio playback, audio apps
Fixed crash that could occur on activity save at high elevation
Fixed issue where sometimes heart rate and PulseOx data would not show when all-day PulseOx was enabled
Various other fixes and improvements

Added test code to track down issue with save at high altitude. Please see readme for beta.
Improvements to segment achievements
Improve stress readings
Improvements to media player
Improvements to phone connectivity
Fix blocky elevation issue
Improvements/fixes for Spotify
Fix potential device freeze on activity summary loop.
Improvements to headphone connectivity
Improvements to sensor connectivity
Fix backlight gesture bug introduced in 3.46 beta
Various other fixes and improvements

Added PacePro feature.
Added additional data field configurations (5 and 6 field).
Added graphical gauge data fields (i.e. Heart Rate, Cadence, etc.)
Improve ANT+ and BLE sensor management
Bluetooth software update to address battery life issues that could occur on some devices
Improvements to headphone pairing and media player
Improvements to golf
Improvement/fixes for Connect IQ
Some improvements for segments/Strava segments
Various other fixes/improvements

Added ability to enable wrist-based heart rate for swimming (pool and open water). This feature is enabled by default. To enable/disable this feature: 1. Open Menu 2. Scroll to 'Wrist Heart Rate' and enter menu 3. Scroll to 'While Swimming' and toggle to 'On'
Fix swimming cadence/stroke rate
Improvements to PulseOx settings
Various fixes for ConnectIQ

Added ability to enable wrist-based heart rate for swimming (pool and open water). To enable this feature: 1. Open Menu 2. Scroll to 'Wrist Heart Rate' and enter menu 3. Scroll to 'While Swimming' and toggle to 'On'
Added Connect IQ 3.1 functionality.
Fixed issues with LiveTrack
Addressed rare issue of hourly alert drifting off of hour
Fixed lapping issues in adaptive training plans and workouts
Addressed 'Around Me' search time when using North Up map
Fixed issue of duplicates of a user in GroupTrack
Enabled support for Approach CT10 golf club trackers
Added Sight N' Go feature

Fixed bug that would slowly fill temp folder with unnecessary files
Enable phone position injection to improve GPS fix times after moving long distances
After Sunset added for backlight gesture option
Added option to disable/enable lap key for activities
Various golf improvements
Added contextual menu accessible from activity paused screen
Various other improvements

Connect your Forerunner 945 to your computer using the USB cable.
Download and unzip Forerunner945_429Beta.zip. Place the GUPDATE.GCD file in the \GARMIN folder of your device's internal storage drive.
Disconnect your device from the computer, approve the update on the watch, and wait for the update to finish.
Reconnect your Forerunner 945 to your computer using the USB cable.
From the RemoteSW folder in the unzipped download, copy the 006B310705.GCD and GUP3114.GCD files into the \GARMIN\RemoteSW folder on your device.
Again, disconnect your device from the computer, approve the update on the watch, and wait for the update to finish.
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. NOTE: If you revert to an older version of software, all of your settings will be reset to defaults.
To then downgrade your peripheral software, place the 006B310700-290.GCD and GUP3114-320.GCD from the RemoteSW\Downgrades folder into your device's \GARMIN\RemoteSW folder.