iOS 9.9.17.1.2 (build 21B101) is an official Apple over-the-air update for the iPhone 12, released on 2023-11-30T18:10:54Z. The update package is 5.8 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 570f685f442946839d658ed8949436a46ed6d275.zip.