You could have downloaded GarminUpdater 5.40 for Mac from our application library for free. GarminUpdater for Mac lies within System Tools, more precisely Device Assistants. Our built-in antivirus checked this Mac download and rated it as virus free. This free Mac app was originally produced by Garmin Ltd. or its subsidiaries.
From the developer:
GarminUpdater is a free application that lets you check for and install software updates without using an Internet web browser. The app updates most products, excluding Palm and Pocket PC devices, fixed-mount marine devices, chartplotters, fishfinders and certain discontinued devices.
You may want to check out more software for Mac, such as par2formac, Macfilink or Missing Sync for Palm Pre, which might be related to GarminUpdater.