Can I update the firmware without a Wi-Fi connection

1. Wi-Fi connection: The device can connect directly to a Wi-Fi network to download and install updates. This is the recommended method[4][5].

2. Smartphone tethering: If you don't have access to Wi-Fi, you can use your smartphone's mobile hotspot feature to provide a Wi-Fi signal for the device to connect to[1].

3. Bluetooth connection via smartphone: The device can update indirectly via Bluetooth using the Garmin Connect app on a smartphone, which can be connected to the internet via Wi-Fi or mobile data[2].

4. Computer connection: You can connect the device to a computer and update it using the Garmin Express application[4].

It's important to note that the device needs some source for the firmware update, whether it's a Wi-Fi network, a smartphone connection, or a computer. There doesn't appear to be a way to update the firmware completely offline without any internet connection.

If you're unable to use Wi-Fi, the next best option would be to use your smartphone's hotspot feature or connect the device to a computer with Garmin Express installed. These methods will allow you to update the firmware without a direct Wi-Fi connection to the device.