原推：If you have advanced data protection on for iCloud and buy a HomePod (that ships with an OS older than 16.2) you won’t be able to set up the HomePod until you update it. Problem is there’s a Home app bug that prevents that. But you can update via a Mac. support.apple.com/en-us/HT212654
https://twitter.com/markgurman/status/1616115559715975168