How to Update Firmware On Most Garmin Devices
Updating your Garmin nüvi GPS unit software just got easier. Use WebUpdater to automatically keep your operating software current. The Garmin WebUpdater can be downloaded from Garmin. If you need to update your software / firmware from Linux, you can actually extract the downloaded exe and upload the unit software / firmware update file (e.g. called GUPDATE.GCD) manually to the device. The Garmin Firmware downloads are available from Garmin.