This software can be downloaded using Garmin Express or Garmin Connect Mobile. Please note it can take up to 24 hours for the software to be available.
Changes made from version 2.80 to 2.90:
Fixed issue with floors climbed not accumulating
The full change log can be found here. http://www8.garmin.com/support/download_details.jsp?id=10044
NOTE: Sensor Hub Version 2.50 is also necessary for proper tracking of floors climbed. To immediately install this, please use Garmin Express or WebUpdater.