In order to start using Garmin ecoRoute on your compatible sat-nav you will need to run Garmin Web Updater. If you do not have Garmin Web Updater then please choose from the following links and follow the instructions.
Unit Software
WebUpdater For Legacy Windows Operating Systems (Pre Windows 2000), Ver. 2.4.0, as of Dec 20, 2006, Download
WebUpdater For Mac, Ver. 2.0.5, as of Dec 31, 2008, Download
WebUpdater for Windows, Ver. 2.4.1, as of Apr 03, 2007, Download
Instructions
Run Web Updater
It will install version 3.0 or higher on your sat-nav
Once loaded it will give you further options. See screenshot below:
Select all apart from the voices or text you do not need on your sat-nav
Once installed your sat-nav will re-start and ecoRoute will be installed