Rouvy Over the Air (OTA) firmware update capability and the BlueGiga dongle go together like a perfectly matched cleat and pedal. You could try to use one without the other, but you might not like the result. The BlueGiga dongle contains a Bluetooth (BLE) radio that allows PCs to communicate with BLE devices, such as their dual mode or BLE only cycling power meters. Reach for the BlueGiga USB over native BLE integration for firmware upgrades that are truly plug-and-play.