Is it possible to update the firmware via Bluetooth

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

2. Slower process: Updating via Bluetooth is generally slower than using a direct Wi-Fi connection or a physical connection to a computer[2].

3. Partial updates: While the main firmware can be updated via Bluetooth, some components like GPS, Wi-Fi, OHR, and sensor hub firmware may only be updatable through Garmin Express on a computer[2].

4. Installation timing: When updating over Bluetooth, the default setting is to install updates "tonight," so the update may be downloaded but not immediately installed[2].

It's important to note that while Bluetooth updating is possible, it's not the most efficient method. For faster and more comprehensive updates, it's recommended to use a direct Wi-Fi connection or connect the device to a computer with Garmin Express installed[3][5].

To check for updates via Bluetooth, ensure your device is paired with your smartphone and the Garmin Connect app is up to date. The app should notify you when updates are available for your device.