1) GPS Maps: Basecamp lagging on a MACIf you find that Basecamp is running very slowsly on your MAC, and that it is slow to react when you pan or zoom on it: We advise that you uninstall Basecamp. Then update your OS (Operating System) on your MAC. Then reinstall Basecamp. This may resolve your issue.
2) VIDEOS: Transferring T4A Maps to Your GPS using Mac (MapInstall)
3) VIDEOS: Installing T4A Maps on Your Mac (From SD Card)
4) VIDEOS: Installing T4A Maps on Your Mac (From Download Links)