The latest from Garmin

Not all the map files can be used on the memory card.

Here are some names used by Garmin OS:

  1. gmapsupp.img - maps you download, can be both internal and external on a SD card (this name is most common, and it means you can copy it into your GPS internal memory or memory card
  2. gmapprom.img - built in maps like City Navigator, only internal
  3. gmapprom1.img - built in extra maps, only internal. City Navigator EU and US need two files
  4. gmapbmap.img - base map file, can only be internal (on the GPS device)
  5. gmapoem.imb - OEM maps, only internally