The latest system update for your Chromecast comes to Android TV OS 12 (formerly Android 10) and includes support for 4K, among other things.
CHROMECAST HD vs 4K – Interesting results
Several Reddit users have spotted a new update for Chromecast that adds 4K support, additional visual and audio controls, improved security, and more. This latest update (version STTE.220621.019.A2) skips Android TV OS 11, bringing your Chromecast from Android 10 to Android 12. And of course, there are a number of unspecified bug fixes and performance improvements.
This download adds additional options to give you control over High Dynamic Range (HDR) and surround sound, as well as the ability to manually change refresh rates to match the frame rate of a video. In other words, the speed of what you see on screen will more closely match what is being played, which should make everything appear to move more fluidly.
Additionally, the update will also install the July Android security patch, which addresses several critical and high-risk issues. And if you wanted to disable camera and microphone access for your apps for privacy or any other reason, you can do so now.
