Useful detail map naming in 2x5/W and related hardware is:
gmapprom.img: internal only, (primary mapset)
gmapprom1.img: internal only (secondary mapset)
gmapoem.img: internal only (rarely used and only useful for some map types of small size, example is for dealer POIs)
gmapsupp.img: internal or SD (supplemental mapset)
gmapsup1.img: SD only with firmware V7.60> (2nd supplemental mapset).
All detail maps reside in Garmin root folder of unit or SD. See: [Only registered and activated users can see links. ].
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Right now I have a file named D3479160B.jcv inside the .System\JCV folder which is part of the City Navigator North America NT 2016.10 map.
My guess would be D3084160A.JCV, just by looking at the first two characters of my file name (D3...). But I want to be sure.
Thanks in advance...
Last edited by gmua; 13th August 2015 at 15:29.
Unfortunately a jcv file for nuvi 55 is not available for CNEU NT map.
CNNA is NT, nuvi 55 uses and gets EU NTU from Garmin Express, so it's normal jcv doesn't exists for NT version.
sent with my phone