Along with the release of the final version of iOS 12.4 Apple suddenly remembered the older version of its mobile operating system and released iOS and iOS 9.3.6 10.3.4 for older iPhone and iPad models.
It is worth noting that iOS and iOS 9.3.6 10.3.4 not brought any new features. In firmware cupertinos fixed old bugs. In particular, the updates fix a bug and GPS bug which incorrectly determined the date and time.
iOS 9.3.6 designed for owners of the first iPad mini, iPad 2 and iPad 3, and iOS 10.3.4 will be able to set up users on iPad 4 and iPhone 5. Cupertinos strongly recommend that all owners of older devices to upgrade their gadgets.
At the moment, Apple remains one of the few companies who make similar fixes for older devices. In addition to iPad and iPhone cupertinos from time to time release new firmware for its branded routers, which have long been discontinued.