Quote Originally Posted by frago1964 View Post
OK, what I did:
I check in the hidden file system and find a JCV folder from my original map(coming with my nuvi) thus I check if real intersection works and it works with the former map.
So the problem I suppose is the compatibility of the JCV file and the map you select in the system, I notice also that the original JCV file had a ".sum" file , what is the purpose of this file ?
Where can I find the compatible JCV file for the map 2010.20?
Thx for helping
.sum files are update related, can be deleted
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use search in MAP section and you'll find map 2010.20 (CNEU or CNNAM ?) i hope jcv links are still good, but why not to update to the latest version ?

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