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How can I update the software/firmware on the GPS 175?

To update the software/firmware on the GPS 175, please visit your local Garmin Dealer. To find a Garmin Dealer, visit the Dealer Locator: https://www.garmin.com/dealerlocator/

For Additional Software information, visit: https://www8.garmin.com/support/collection.jsp?product=010-01822-50

GPS175/GNC355/GNX375 - Software Loader Image 006-B3353-07 - Service Bulletin 2048 software version 3.10: https://www8.garmin.com/support/download_details.jsp?id=15281

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