Both. Map version + Nuvi model
(you cant use old JCV version with new map version)
Different nuvi or other devices models may use different files.
yes, for example, you can delete D3568130A.JCV and replace it with D3568140A.JCV2- Should I delete the old JCV file from the .system?
yes, for example, delete old D3154160A.G2S and replace with D3154170A.G2S.Same questions for G2S, SQLite and SID.
Addition files are version dependant.(2016.10 addition files work with 2016.10 map only)
Delete old versions.should I delete them from .system?
Like for JCV, they are version dependant.Are those files linked to the nuvi or to the map?
Reason is all addition files contain the FID of their related map, you cant use those files with map with different FID. More info here: [Only registered and activated users can see links. ]
Different devices models may use different addition files. Look at garmindevice.xml in your nuvi Garmin folder for supported files and their paths.
Bookmarks