http://www8.garmin.com/support/download_details.jsp?id=9504
Change History
Changes made from version 8.70 to 8.81:
•Improved Bluetooth connectivity with Huawei phones.
•Fixed an issue where smart notifications would not work intermittently, after a power cycle.
•Fixed an issue where one could not set the wheel size to a value less than 100mm when working with a trainer
Installation Instructions
1.Connect your fenix 3/tactix Bravo/quatix 3 to your computer using the USB cable. Download and unzip fenix3_tactixBravo_quatix3_***Beta.zip.
2.Place the GUPDATE.RGN file, found in the ***_Beta folder, into the \GARMIN directory of the device.
3.Disconnect from your computer and proceed through the update.
4.If you would like to revert to the last public release software, follow the above steps, but place the gupdate_850.rgn file into the \GARMIN folder of the device. Rename the file to gupdate.rgn before disconnecting your device. NOTE: If you revert to an older version of software, all of your settings will be reset to defaults