iOS 11.2.5 (build 15D5049a) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2018-01-03T18:16:33Z. The update package is 115.9 MB. This is a delta (partial) update that requires 11.2.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0d257db41d553bb60c8f29c73602e52ca27c1654.zip.