IOS 7.1.2 build 11D257

iOS 7.1.2 build 11D257 is the official RTM build of iOS 7.1.2, which was released to the public on 30 June 2014. It is the last build of iOS to support the iPhone 4.

Fixes and improvements

 * Fixes a bug with data transfer for some 3rd party accessories, including bar code scanners.
 * Corrects an issue with data protection class of Mail attachments.
 * Improves iBeacon connectivity and stability.