audioOS 9.9.18.5

audioOS 9.9.18.5 (build 22L572) is an official Apple over-the-air update for the HomePod, released on 2025-05-12T17:13:18Z. The update package is 1.76 GB. This is a delta (partial) update that requires 15.1.1 to already be installed on the device - it cannot be applied from scratch. This update is no longer signed by Apple, meaning it can no longer be downloaded and applied on-device through Settings.

The OTA payload file is b2248735a4739c33efa1c7303734713320a846b1.zip.