A firmware update pushed out to Google Home and Google Home Mini smart speakers earlier this month has been bricking devices, leaving them completely unresponsive. Google has acknowledged the problem and promised a resolution in the near future. Unfortunately, the tech giant is apparently not replacing out-of-warranty devices.
https://www.notebookcheck.net/Firmware-update-bricks-Google-Home-and-Google-Home-Mini-smart-speakers.440276.0.html