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"Memory Full" Message on a nüvi® 600 Series or StreetPilot® c500 Series Device
The most common cause of a Memory Full message on a nüvi® 600 series or StreetPilot® c500 series is that the device requires a software update.
To update the software on these devices, use the Garmin Express program. Click on the following link to download and install Garmin Express.