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I feel like an ***** but….how do I update my HomePods
You are not an *****, I have to look stuff up all the time.
Here's what I found on Apple's Support site (source link below):
Make sure that your device is updated to the latest version of iOS, iPadOS, or macOS.
Open the Home app. Select Home , then Home Settings > Software Update.
Select HomePod to turn automatic updates on or off. If there's a new update, select Update.
Software Update will also tell you if your HomePod is already up to date, and show you the installed HomePod software.
A white spinning light appears on the top of HomePod while it's updating. The update might take some time. Make sure that your HomePod stays plugged in while it's updating.
Published Date: September 20, 2021
Source: https://support.apple.com/en-us/HT208247