audioOS 9.9.18.4.1 (build 22L261) is an official Apple over-the-air update for the HomePod mini, released on 2025-04-16T17:28:41Z. The update package is 1.42 GB. This is a delta (partial) update that requires 16.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: dc6a30c89b85d3f748163ad38d752c46a74426d2.zip.