Google’s sweet little Chromecast with Google TV dongle device found a new update to kick off the weekend, with a new security level and probably not much else. It does not tell you much, and I’m sorry.
The update is available as Android TV OS QTS2.200918.033.7115981 built and with the December Android security level (was in September). It’s still Android 10 and not Android 11, in case you were wondering. At only 78.2 MB, it is likely that the update is mostly a bug fix.
Since the update is fairly live for the import, go to Settings> About> System Update. Be aware that the update needs a bit of tweaking and restarting, so stay tuned if you are looking in the middle of something or need to go for it shortly.