If installing Garmin Express on a Mac, you’ll click Download for Mac instead. Some browsers will mark the Garmin download page as an unsafe location. This is a false flag; the Garmin Express installation file does not contain a virus.

Windows - Double-click the setup file, follow any prompts to the “Install” page, check the “I have read and agreed to the terms and conditions” box, click Install, and click Yes when prompted. Mac - Open the Garmin Express DMG file, verify the software if necessary, click and drag the Garmin Nuvi app icon onto the “Applications” folder icon, and follow any prompts.

On a Mac, you may need a USB 3. 0 to Thunderbolt adapter in order to do this.

The dashboard is the page with the house-shaped icon in the upper-left corner.

You can re-update the Garmin Nuvi at any time by opening Garmin Express, clicking the house-shaped tab, selecting your Garmin Nuvi, and clicking Install All.

Maps download as an . img file. You’ll need to rename the file to gmapsupp. img if it has a different name. You can usually only have one custom gmapsupp. img file on your GPS at a time, though some newer Garmin devices allow for multiple . img files.

Go to https://planet. openstreetmap. org/ in your browser. Click one of the Complete links below the “Complete OSM Data” heading. Wait for the file to download.

You can close Garmin Express if you have it installed. If your Garmin has an SD card, remove the SD card and then insert it into your computer’s card reader instead.

Open the Nuvi’s main menu. Select Setup (or similar). Select Interface Select USB Mass Storage or USB

Windows - Press ⊞ Win+E to open File Explorer, click This PC in the upper-left corner of the window, and double-click the Garmin Nuvi’s name below the “Devices and drives” heading. Mac - The Garmin Nuvi’s name should appear on the desktop. If it doesn’t, open Finder and then click the Garmin Nuvi’s name on the left side of the window.

You will most commonly have to create a folder in Nuvi 1xxx models.

The copying process may take up to an hour depending on the size of the file.

Open the “Tools” menu and select Settings Select Map and then select Map Info Uncheck your old map’s box. Check your new map’s box.