iOS 12.2 (build 16E5227a) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2019-03-18T17:07:04Z. The update package is 793.57 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6207f6b7140af81db5b56964ca54fb59439772e5.zip.