iOS 11.2.1 (build 15C153) is an official Apple over-the-air update for the iPhone 7 Plus (Global), released on 2017-12-13T18:14:46Z. The update package is 1.31 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: dc1b9575ab65714563674f2ac1dcded357e6772c.zip.