Update firmware to improve connectivity and stability with AV CONTROLLER for selected models Yamaha product web site - Support. Rx-v3073/v2073/v1073/v773/v673/v573/v473. Rx-a3020/a2020/a1020/a820/a720. Htr-7065/6065/5065/4065. This AV Controller app will turn your Android device into a Wi-Fi enabled remote control for your Yamaha network products.