I have a Nuvi 2597 LMT that has Europe 2017.10 All NTU installed as the main map when I bought it (has been updated to 2017.10).
I have followed the tutorial and have got the CNNANT2017.10 All installed on the SD Card and it is in the \SD Card\Garmin folder. It seems to work fine.
I have read through the forum tutorials but I still am unclear on which additional files my Nuvi2597 can use and in what folder structure of the SD Card I should put them in.
1. Which of the following additional files can my NUVI 2597 use and what folder or folders on the SD Card should I put them?
2. Does the 3dmap and Truckdown need to be unlocked?
1. 3D Map
a. gmap3d - Locked
a. D3153200A jcv - Full-Screen3. SID
b. D3060200A jcv – LaneAssistFull (– My guess of best one to use ???)
c. D3080200A.jcv - LaneAssistMedium
d. D3191190A.jcv - LaneAssistPortraitFull
e. D3192190A.jcv - Split-Screen
a. D2656210A.sid - External Point Addressing
b. D3157190A.sid - InstaSearch
c. D3398180A.sid - Fast Routing
d. D3406180A.sid - Traffic Trends v3
a. 3790 ASR
b. 3490 ASR
6. Truckdown gpi - Locked
7. Foursquare files