A common symptom is that the speaker becomes completely unresponsive, but with its white status lights constantly illuminated.
The issue appears to only affect the Home and Home Mini, not the larger Home Max or the Hub smart displays by Google and its Nest smart home division.
Google said in a statement emailed to GearBrain: "We are aware of an issue in which a firmware update is causing a small number of Google Home and Google Home Mini devices to no longer function. We're working on a fix and are replacing devices in the meantime."
An issue here is how the Home smart speakers receive software updates invisibly and often without the user's knowledge. This can lead to the issues Google customers are seeing here, where their device has updated without their knowledge or permission, then become unusable as a result.
Some users suffering from the problem found turning their Google Home speaker off and on again fixed then, while others had to resort to performing a factory reset.
Google is trying to fix a problem that has left some speakers completely dead
However, some Google Home speaker users haven't been so lucky, and their devices are no longer working no matter what they try. At first, Google told customers it would only replace faulty speakers still covered by the one-year warranty. Older devices would not be replaced, customers were told, despite it seeming to be Google's software update which broke them.
Numerous posts on Reddit and Google's support forum report how both the Google Home and Home Mini smart speakers are having problems, with some speculation that the touch-sensitive volume buttons on the top of each device could be to blame. Some owners claimed using a different power cable fixed the problem and made the firmware update install correctly.
Many others, however, say their Google Home speakers are dead and completely unresponsive.