Por si quereis echar un vistazo,aqui teneis manuales en pdf de distintos navegadores gps.Ire actualizando el post poco a poco.
Manuales
Tomtom:
http://www.tomtom.com/support/support.php?ID=3&Language=6
Navman:
http://www.navman.com/Navman/Templates/standardcontent____69865.aspx
Miomap:
http://www.mio-tech.be/en/support/manuals-overview.php
Igo8:
http://navngo.com/content/language/eng/dl/UM/iGO8_UserManual_Spanish.pdf
Garmin:
https://buy.garmin.com/shop/shop.do?cID=121
Supratech:
http://www.supratech.es/downloads.php?category_product=8&downloadType=Manuales
Navigon:
http://www.navigon.com/site/es/es/service_support/download_center/category/54/device_type/none/software/none
Saludos