audioOS 9.9.18.4.1 (build 22L6261) is an official Apple over-the-air update for the HomePod (2nd generation), released on 2025-04-16T17:28:25Z. The update package is 2.56 GB. This is a full OTA update that can be applied from any compatible base version. This update is currently signed by Apple, so it can be applied from Settings › General › Software Update.

Payload file: 6ffd3125354cbe9aedbbfbf4d0c79e96ed3709532b71fdb1fca0216cd98ec4f0.aea.