Probably you have faulty map or faulty addition file in gps. Try cleaning out any old files by installing a new gmapprom.img
You can try to update files by USB stick and see if it works.
Detailed instructions here:
Code:
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You can find all the needed files in Maps section:
[Only registered and activated users can see links. ]
Jetmouse Keygen here:
[Only registered and activated users can see links. ]