Google says it's rolling out fix for stricken Chromecasts

Google is rolling out an over-the-air firmware fix for second-generation Chromecast and Chromecast Audio devices that were rendered untrustworthy by an expired Google-owned device authentication certificate authority, shifting them to a new CA valid until 2045. Users are advised to keep devices online to receive the update, while those who performed factory resets may require additional steps due to the expired certificate blocking initialization via official apps. The report notes other devices (e.g., Chromecast Ultra, Google Home, and some Chromecast-enabled TVs) have certificate expirations looming in 2026–2027.