audioOS 9.9.18.6 (build 22M84) is an official Apple over-the-air update for the HomePod, released on 2025-07-29T17:27:47Z. The update package is 1.44 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: a6053b66ae34d1506cd6970a2ea1201ddf213d92.zip.