audioOS 9.9.15.1.1

audioOS 9.9.15.1.1 (build 19J582) is an official Apple over-the-air update for the HomePod (Unknown Model), released on 2021-11-03T17:10:24Z. The update package is 1.22 GB. This is a delta (partial) update that requires 13.4.5 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 23a9117a79ec56a99d7cf62c220e554d47a6ef61.zip.