So far, I found the app is available on "supported models," not only TVs, but also phones and tablets. I'd look if it is available to download from the app store on the device, but even if you find it, it might tell that the "device is not supported" or give you a similar message - usually, if supported, this app then comes pre-installed on the device. One workaround is to see if your mobile device has the app and then you can cast on the TV - definitely not such a convenient option, but that's the only thing that I can think of...
