iOS 9.9.16.5 (build 20F66) is an official Apple over-the-air update for the iPhone XS, released on 2023-05-18T17:13:54Z. The update package is 4.86 GB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cd5299f60c8d1b72010ea07f9d3a989397e3c560.zip.