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Do I have to rename this 198 MB JCV file from J014703.JCV to JCV110TH.JCV ? My device is NUVI 765t SG/MAL F/W V.250 ? Originally Posted by aekhong I think so. But 198MB jcv is for dual map. (Not only for 37xx but 7x5 too !!) For me it's worth to use 198MB jcv if my unit can use dual map.
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