The procedure under consideration is the process of reverting an iPhone, iPad, or iPod touch to its original software state, as it existed when it left the factory. This action erases all user data, installed applications, and customized settings. An example of its application is when preparing a device for sale or troubleshooting persistent software issues.
This action provides a clean slate, resolving many software-related problems and removing personal information. Historically, it has been a crucial step in device maintenance and security, ensuring user privacy when transferring ownership or addressing significant performance degradation. It is an essential safeguard for sensitive information.