The term refers to the process of removing software restrictions imposed by Apple on devices running a specific version of their mobile operating system. This action grants users elevated privileges, allowing them to customize the device beyond its intended limitations.
Historically, this modification offered users the ability to install applications and tweaks not available through the official App Store. Benefits included enhanced personalization options, access to a wider range of software, and the potential to bypass carrier restrictions. However, it also introduced security risks and could void device warranties.