My Zumo starts and a few minutes later they just shutdown, i updated their maps but nothing change, what it can be? A technical support said that this problem is from Operational System, it's true? If i Reset to factory configuration it can be solved?

SOURCE: no road maps ( Zumo 550

Do you see a map, with street detail? Any SD card installed?
Tap the wrench symbol, tap mapping, tap about, any maps checked? if not, check the apropriate map and go back to the map screen

SOURCE: SHUTDOWN

My Garmin 660 after going thru the initial start up of "loading map" it will just SHUTDOWN. I have tried to clear the data in the diagnostic menu as recomendated by Garmin support to no avail. At the start, the trouble is it will just stay in the loading map stage. Then later it begin to shutdown.

SOURCE: Garmin zumo 550 map update problem

1. Make a backup of your Zumo by copying all the file to your computer.
2. Using your PC and MapSource select all the maps then send them to a SD memory card need 2Gig or bigger card.
   
3. Try to rename this file to gmapprom.img and replace the same named file in your zumo. (I haven't tried this personally, so if it fails, just replace this with your backup and all will be as it was.)
   
4. If this fails, you can use the SD memory card in your zumo and it will use this map instead, but it will take longer to boot your zumo.
   

SOURCE: map update notice screen

Resetting or trying to recalibrate the touchscreen does not work for this problem. Every time I try to reset or recalibrate, the Map Update Notice immediately pops up and I have not found a way to bypass this screen. I think this may be a glitch programmed by Garmin to force users to buy an upgrade after a couple of years.