Please note, that when you connect your device to a Wi-Fi network all Bluetooth connections will be overridden to save power. Once you're out or Wi-Fi range your device will automatically resume the Bluetooth connections.
If you don't have a Wi-Fi connection available you can also update your device by connecting it to your computer with a USB cable to use your computer's internet connection. Please, make sure you have the MyDrive Connect software installed and running on your computer.
For more information, please see this FAQ [support FAQ - Updating your device using Wi-Fi]