Some devices, like 1st-generation Chromecasts and Vizio SmartCast TVs, have stopped receiving major updates from Google. Philo cannot support Chromecast devices with firmware below 1.42. Playback may still work, but there may be issues.
To find the firmware version of your Chromecast, use the (Link opens in a new tab)Google Home app:
Open the Google Home app.
Tap your device at the bottom.
Tap Settings (gear icon at the top-right corner).
At the bottom look for the Cast firmware version.
The instructions will vary for TVs with Chromecast built-in. Look for the Cast version in the Settings or System Information.