PCM550 update / routing issues

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I have a PC*MILER Navigator 550
Version 8.1.0.529
Data: GRD_ALK.NA.2011.04.5.32.6.1
Cities: CTY_ALK.NA.2011.04.5.32.6.1.1

I have installed CoPilot 2 onto my laptop. I can't find how to update the North American map. There is no update map option.

Why does the routing keep giving me the number of miles to a river, or a bridge?
Why does the routing give me miles to a highway exit that I DO NOT NEED? This has caused me to miss my exit a few times because it was so busy telling me to stay on current highway that I went past my exit (both exits are about 500 feet apart) before it told me what exit I needed. Very annoying.

I just want to know the number of miles to MY exit, and if the highway has a "Y" split, a warning letting me know which way to go.

Also, the unit keeps locking up on me at random times. The map image will still scroll, but the bottom status bar and side bar with turn info doesn't change. I have to use the reset button on the back to get it to work again.