Obtaining prior iterations of Apple’s mobile operating system involves sourcing installation files, typically in .ipsw format, and utilizing a computer with iTunes (or Finder on newer macOS versions) to facilitate the installation process. This differs from the standard over-the-air update process, which delivers the newest OS version. For instance, individuals might seek iOS 14 if their device’s performance degrades after updating to a more recent release, or if a specific application requires an earlier OS version to function correctly.
The ability to revert to older operating systems can provide benefits such as improved device performance on older hardware, access to features removed in later iterations, or compatibility with legacy applications. Historically, this practice has been more prevalent amongst enthusiasts and developers for testing and troubleshooting purposes. However, Apple generally discourages this practice, primarily due to security concerns and the complexities involved, potentially leading to unstable system behavior.
