Open navigation interface, there is no map display, there is a satellite, that is, the light shows their own arrows, the other blank
May be SD card or card software, a problem, the general GPS has a reset hole (reset), first with a pencil like the kind of poke, reset it, try, if not look at instructions.
GPS vehicle navigation system which ah, settimio. The map is not piracy, suggest or buy brands, such as: China, Huayang what caska, Philco. These brands are very good, the national market doing well, quality is good, service is also very good.
