audioOS 9.9.18.6 (build 22M84) is an official Apple over-the-air update for the HomePod, released on 2025-07-29T17:27:45Z. The update package is 1.76 GB. This is a delta (partial) update that requires 15.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 07b1c0b0e52cc2195088e57cde0e416f5f1bc9f6.zip.