iOS 7.1.2 was the final minor update for iOS 7, focusing on bug fixes, iBeacon improvements, and security patches. It was the last version to support the iPhone 3GS (32-bit) and the iPhone 4 (which suffered from sluggish performance on iOS 7). Devices that originally ran iOS 7.1.2 include:
An IPA (iOS App Store Package) is the archive file that stores an iOS app. Think of it as the equivalent of a .exe file for Windows or .apk for Android. Each IPA is encrypted with a FairPlay DRM linked to the Apple ID that purchased it. Facebook Ipa Ios 7.1 2 Download