audioOS 9.9.18.1 (build 22J580) is an official Apple over-the-air update for the HomePod, released on 2024-10-28T15:29:16Z. The update package is 1.43 GB. This is a delta (partial) update that requires 16.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 54f666fa120aec92a9b6a1ca70cf6b0dd10902ee.zip.