audioOS 9.9.17.0

audioOS 9.9.17.0 (build 21J354) is an official Apple over-the-air update for the HomePod (2nd generation), released on 2023-09-18T17:26:44Z. The update package is 1.13 GB. This is a delta (partial) update that requires 16.3.1 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 62c7d99af19810b48d4fc5a6287da86275c36ccb.zip.