audioOS 9.9.15.2

audioOS 9.9.15.2 (build 19K52) is an official Apple over-the-air update for the HomePod (Unknown Model), released on 2021-12-13T18:28:23Z. The update package is 1.24 GB. This is a delta (partial) update that requires 13.4.6 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 a8c8780b57146db895c92b9c92a8cbac18e5a939.zip.