Thread: Garmin Nuvi MapSet format- how to store them in your device

ok thanks for helping me , i'm downloading garmin express ; but for my basemap i think i have erased it by error in the past when trying to update ...how can i recover it?

for the new gmapprom.img , i putted it in a garmin folder on a sd car that is placed in the device ; the screen shot i have shown is only the content of the garmin folder that is directely on the gps device memory.

if cannot find a basemap file to put inside my device , can it work from a map in the sd card??
thx
edit : now i 'm searching for basemap on forum ( sorry didnot seen it at the first read)

i think it will be more simple for me to download unlocked mapsource data and to send map from mapsource in the device ,