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Downloading a Garmin Software Update to a Preprogrammed Micro/SD Chart Card

Garmin does not recommend using a BlueChart g2/g3 or g2/g3 Vision SD card to download the update for a marine chartplotter or sounder. It is recommended to purchase a separate SD card for the downloading and updating process. Even though the update process does not erase any information from the card, if any files on the card were deleted manually, it would cause the maps to no longer work.

In an emergency situation where an update is needed and a spare card is not available, a g2/g3 or g2/g3 Vision card can be used. If anything is deleted from the card and this causes the card to be inoperable, Garmin will not replace the card under warranty. It is strongly recommended to use a blank SD card for the update.