I've got a Nuvi 770. The voice works sometimes. It will work the first time I turn it on after a reset. Sometimes it will give voice commands for 5 or 10 minutes, then stops. I haven't upgraded or done anything else.
after 45 minutes on hold with Garmin the only answer and no help I got was "it shouldn't be doing that." Have either one of you gotten any help? Also I every now and then I get firmware updating screen shows up for no reason while I am driving. Thanks
if you get any help(especially from Garmin) let me know, I have a 780 doing the same thing. Also, do the roads disappear on yours also?
