Download of TrakUpdate 1.2 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The software lies within System Tools, more precisely Device Assistants. This free Mac app was originally produced by TrakMaps.
From the developer:
TrakUpdate helps you to update your Garmin device from Windows OS. If you plan on following turn-by-turn routing on your GPS unit, make sure to choose a suitable routing mode. Otherwise, the GPS unit may generate a straight line as the route. It has an intuitive interface.
You may want to check out more software for Mac, such as toDoo, NWD-211AN Utility or NI-VISA, which might be similar to TrakUpdate.