audioOS 9.9.18.4

audioOS

Version

9.9.18.4

Build ID

22L255

File Size

1.19 GB

Release Date

2025-03-31T17:29:37Z

Update Type

Normal release

Delta update - requires 17.6 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 2025-03-31T17:29:37Z. The update package is 1.19 GB. This is a delta (partial) update that requires 17.6 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 3d87d935e5923709076a0bcca70cb5c9007e345d.zip.

Direct URL

https://updates.cdn-apple.com/2025WinterFCS/patches/082-16259/FAA423B5-A05A-4EF8-ADD4-FF2493A27800/com_apple_MobileAsset_SoftwareUpdate/3d87d935e5923709076a0bcca70cb5c9007e345d.zip

Filename

3d87d935e5923709076a0bcca70cb5c9007e345d.zip

Other Devices

HomePod (Unknown Model)

AudioAccessory1,2

HomePod mini

AudioAccessory5,1

HomePod (2nd generation)

AudioAccessory6,1