audioOS 9.9.18.4.1

audioOS

Version

9.9.18.4.1

Build ID

22L261

File Size

1.75 GB

Release Date

2025-04-16T17:28:30Z

Update Type

Normal release

Delta update - requires 15.4 installed first.

Download OTA

Looking for beta firmware? View beta builds for HomePod →

About This Update

audioOS 9.9.18.4.1 (build 22L261) is an official Apple over-the-air update for the HomePod, released on 2025-04-16T17:28:30Z. The update package is 1.75 GB. This is a delta (partial) update that requires 15.4 to already be installed on the device - it cannot be applied from scratch. This update is no longer signed by Apple, meaning it can no longer be downloaded and applied on-device through Settings.

The OTA payload file is b377250097a650493a5a81829b55e8a20bb3c2e0.zip.

Direct URL

https://updates.cdn-apple.com/2025WinterFCS/patches/082-18935/113037E4-4E81-44CB-88BE-9A6F0363C8BB/com_apple_MobileAsset_SoftwareUpdate/b377250097a650493a5a81829b55e8a20bb3c2e0.zip

Filename

b377250097a650493a5a81829b55e8a20bb3c2e0.zip

Other Devices

HomePod (2nd generation)

AudioAccessory6,1

HomePod (Unknown Model)

AudioAccessory1,2

HomePod mini

AudioAccessory5,1