iOS 8.4.1 (build 12H321) is an official Apple over-the-air update for the iPhone 6+, released on 2015-08-13T18:05:15Z. The update package is 1.76 GB. This is a delta (partial) update that requires null already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3ed67346896a74c119a3e04e274cada10672458d.zip.