audioOS 9.9.16.3 (build 20K6649) is an official Apple over-the-air update for the HomePod (2nd generation), released on 2023-01-24T18:07:40Z. The update package is 2.12 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f25294548a6070b0b7cb3e48fdbe90fa50ba3f0a.zip.