audioOS 9.9.18.4

audioOS

Version

9.9.18.4

Build ID

22L255

File Size

1.76 GB

Release Date

2025-03-31T17:29:30Z

Update Type

Normal release

Delta update - requires 15.0 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 2025-03-31T17:29:30Z. The update package is 1.76 GB. This is a delta (partial) update that requires 15.0 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 8b5cfb589c6fdecfac173360a78611a765f37ae7.zip.

Direct URL

https://updates.cdn-apple.com/2025WinterFCS/patches/082-16072/1F21FC8E-E3B8-4781-B04E-854E7807EE75/com_apple_MobileAsset_SoftwareUpdate/8b5cfb589c6fdecfac173360a78611a765f37ae7.zip

Filename

8b5cfb589c6fdecfac173360a78611a765f37ae7.zip

Other Devices

HomePod mini

AudioAccessory5,1

HomePod (Unknown Model)

AudioAccessory1,2

HomePod (2nd generation)

AudioAccessory6,1