For SP JCV from Nuvi 40/50 should work just fine. Inside .System folder you must have a JCV folder and in there just copy xxxxxx.jcv file. Always use the jcv file that comes with the version of NTU you have because JCV is one of these files that are version dependant. For example i use only the Greek part of CNEU NTU 2015.30 and for JCV file i use D3589140A.JCV from the same topic you mentioned at the first post, it works in landscape and portrait also.

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