audioOS 9.9.18.6 (build 22M84) is an official Apple over-the-air update for the HomePod, released on 2025-07-29T17:27:52Z. The update package is 786.39 MB. This is a delta (partial) update that requires 18.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1d22ef67bdf42787d0373945518a7c6184a3f4e6.zip.