On this site you can download several free maps for Garmin devices, based upon OpenStreetMap (OSM) data and updated at 25 August 2016.
The next update will be available at the end of September. The use of these maps is at your own risk.
OSM is not error-free. Please improve OSM at www.openstreetmap.org to create better maps for yourself and others.
As an anti-spam measure you need to register to acquire access to the download page