audioOS 9.9.17.0 (build 21J354) is an official Apple over-the-air update for the HomePod mini, released on 2023-09-18T17:26:41Z. The update package is 1.52 GB. This is a delta (partial) update that requires 15.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 376138db17dd5d77a95ee8b677bab492b2d66a1f.zip.