
Google is rolling out a fix for broken Chromecasts
Google is rolling out a fix for Chromecast device issues that left many users with “untrusted device” errors that disabled casting. The issue, which appeared over the weekend, seemed to widely affect Chromecast 2nd generation and Chromecast Audio devices. Google has not said what caused the error...
Google says it's rolling out a fix for stricken Chromecasts
It'll take a few days, give or take your situation Google has told The Register it's beginning to roll out a fix for Chromecast devices that were bricked due to an expired security certificate authority. We're assured this deployment will take place over the next few days.…

Google has a fix for your broken Chromecast V2 unless you factory reset
Just keep your Chromecast plugged in, and it should come back to life.
Why You Might Want to Avoid the Latest Chromecast Update
Chromecast with Google TV users should take caution.