How to open .SUM file extension?

If you cannot open a new file that has been saved in the .SUM format you need to download the appropriate software. The manufacturer of .SUM files is Garmin; .SUM files belong to the Misc Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .SUM files. Activities performed in the order described should solve the problems with all the files in the .SUM format.

• What is .SUM file?
• How to open .SUM file?
• What is .SUM file?