audioOS 9.9.16.4.1 (build 20L498) is an official Apple over-the-air update for the HomePod mini, released on 2023-04-12T17:25:28Z. The update package is 1.22 GB. This is a delta (partial) update that requires 15.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2f462e1d0b8765a2cc6e17e73394ebaab395517f.zip.