This works for my Garmin Nuvi 775T and should also for a Zumo 660.ĭoing ANY of this (mod boot screen, voices, vehicle icon) should NOT damage your GPS in any way!īut to be careful you should backup your GPS.ġ) With the GPS off, plug your GPS into your PC with the USB cord.Ģ) The GPS will power up in a special PC connection mode.ģ) Windows will bong and find the new device. Or even if your using a BRP Garmin GPS you can mod your GPS and tailor it to YOU! OK here is a little DIY stuff for folks using a non_BRP GPS.