audioOS 9.9.18.1 (build 22J580) is an official Apple over-the-air update for the HomePod, released on 2024-10-28T15:29:10Z. The update package is 1.36 GB. This is a delta (partial) update that requires 16.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 903ae5382aa7a4e8cbbc4690af71f3f4a99813fa.zip.