Updating Maps and Software with Garmin Express
You can use Garmin Express™ software to download and install the latest map and software updates for your device. Garmin Express is available for Windows® and Mac® computers.
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On your computer, go to
www.garmin.com/express.
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Connect your
RV 770 device to your computer using a USB cable.
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Select an option:
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To install all available updates, click Install All.
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To install a single update, click View Details and select an update.
NOTE: If a map update is too large for the internal storage of the device, the software may prompt you to install a microSD® card in your device to add storage space (Installing a Memory Card for Maps and Data).
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The Garmin Express software downloads and installs the updates onto your device. Map updates are very large, and this process may take a long time on slower Internet connections.