audioOS 9.9.18.4

audioOS

Version

9.9.18.4

Build ID

22L255

File Size

1.43 GB

Release Date

2025-03-31T17:29:35Z

Update Type

Normal release

Delta update - requires 16.5 installed first.

Download OTA

Looking for beta firmware? View beta builds for HomePod →

About This Update

audioOS 9.9.18.4 (build 22L255) is an official Apple over-the-air update for the HomePod, released on 2025-03-31T17:29:35Z. The update package is 1.43 GB. This is a delta (partial) update that requires 16.5 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 4c03dc82f75c71d0caa881f848d36ffc97786eeb.zip.

Direct URL

https://updates.cdn-apple.com/2025WinterFCS/patches/082-16142/22FA03D4-67D2-485A-8998-F08FE6A9F6CA/com_apple_MobileAsset_SoftwareUpdate/4c03dc82f75c71d0caa881f848d36ffc97786eeb.zip

Filename

4c03dc82f75c71d0caa881f848d36ffc97786eeb.zip

Other Devices

HomePod mini

AudioAccessory5,1

HomePod (Unknown Model)

AudioAccessory1,2

HomePod (2nd generation)

AudioAccessory6,1