.SUM File Extension
What are sum files & how to open them - Garmin Checksum File
- File category: Miscellaneous File Extensions
- Developer: Garmin
The .sum file extension is used by the popular GPS navigational devices produced by Garmin.
This file contains the voice, the list of commands and the map data. The device will still run correctly even if this file is erased.
sum file - Software that can open sum files
Select a software from the list below if you want to open, edit, create, convert, play, use or view sum file. The software are listed by popularity and relevance to sum file type
- Garmin Connect