Hi I'm using 3760T us ,My problem is JCV is not working when i try to simulate route there is no show any Junction view on my nuvi only lane assist.
i copy map to "Internal memory: \MAP\gmapsupp.img " Map is working fine .
and Junction view to "Internal memory: .System\JCV\JCV201240DU.JCV " but not working.

i also try copy map to "SD: \garmin\gmapsupp.img " and Junction view to "SD: \garmin\jcv\jcv201240du.jcv" , map is also working but jcv still not show when i simulate route.

do i need re flash firmware to be 3970 right now i still use original firmware but only copy keyboard and thai font to nuvi , or do i copy JCV file in wrong directory ?
or JCV file need to unlock like img file and what tools should i use ?

thanks