audioOS 9.9.16.4

audioOS 9.9.16.4 (build 20L497) is an official Apple over-the-air update for the HomePod (2nd generation), released on 2023-03-27T17:13:30Z. The update package is 563.86 MB. This is a delta (partial) update that requires 16.3.2 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 a6176e17f46fc96a1fa0524346140045b430d186.zip.