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 563.65 MB. This is a delta (partial) update that requires 16.3 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 008828c44f05c9c89580170d10c6df3377fdacc3.zip.