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
Extension
Developer:
Garmin
Kategorija datoteke:
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Šta je sum datoteka i kako je otvoriti - Garmin Checksum File
Kategorija datoteke:
Programer:
Garmin