I'm using a Pixel 7a. I checked "Check for update" with Android 15 and get the info there is no update available. After this I changed the release channel form stable to beta. After this I checked for updates again. Download was started. After this I changed back to stable.
Only with this step I was able to install a newer version with Android 16.
It is without problems possible to switching between release channels e.g. from beta to stable to get a valid stable version? Can I check which release channel version is actual running on my phone?