Hi, you can try some procedures and get back to me if it's helps.
Take the unit outside and turn it on. Then select View Maps, at the top of the screen it will say either "Locating satellites" or "Acquiring Satellites". Once the Garmin has locked onto the overhead satellites, then it will say "Ready to Navigate".
Locating Satellites take longer than Acquiring Satellites.
About the wrong directions, normally it will always show the same route, unless there is a traffic problem and you use traffic information (sometimes needs a subscription).
If It is locking up (Software) then remove the faceplate and press the reset button.
Yes, this is basically normal. This is not a shortcoming of the GPS per se, but of the maps that it's using and where on the map it has recorded that certain addresses are located.
The maps that the GPS systems don't (typically, to my knowledge) have every building on them, instead they just have numbers recorded every so often on the street and then the machine interpolates where a particular address ought to be based on known intersections. E.g., 150 Foo Street ought to somewhere around the middle of the 100 block of Foo St. on the "even" side of the street. So this is probably why it thinks your apartment is slightly further up the street than it is; when people build things, we often don't allocate exactly the same amount of frontage to each street number, hence the offsets.
The Garmin maps updates page appears to be down at the time this is being posted, but the page to get updates for your GPS is
https://my.garmin.com/maps/updates.htm.You can also sign into the My Garmin page at
https://my.garmin.com.Hope it helped..
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