audioOS 9.9.16.3 (build 20K649) is an official Apple over-the-air update for the HomePod, released on 2023-01-24T18:07:46Z. The update package is 1.52 GB. This is a delta (partial) update that requires 13.4.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ba31ee8d8c380939adcbb6bdb3eb41695c6736e0.zip.