iOS 8.4 (build 12H143) is an official Apple over-the-air update for the iPhone 5 (Global), released on 2015-06-30T15:51:19Z. The update package is 909.88 MB. This is a delta (partial) update that requires 7.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9753d804879e5d63d63bc49048beac4ff7f2fbb9.zip.