Apple stopped signing code for IOS 13.7 on Tuesday, the last iteration of IOS 13 before the release of IOS 14 last week. The IOS 13.7 code signing was stopped six days after Apple pushed the next generation of IOS 14. Because Apple no longer certifies IOS 13.7 code, users of devices upgraded to IOS 14 can no longer download or install the outdated operating system. < / P > < p > the upcoming version of the operating system includes support for Apple’s and Google’s covid-19 exposure notification quick system, which allows users to take advantage of the framework without downloading applications. Apple also introduced a series of new features, performance improvements and adjustments to IOS 14, including home screen widget, new application library, picture in picture support, APP clips, etc. < / P > < p > Apple often stops signing legacy code after new IOS builds are released, in part to protect customers from criminals who attempt to exploit newly discovered vulnerabilities. In addition to security, preventing users from downloading old code also allows apple to make more IOS devices use the latest, feature rich software. The initial beta version of IOS 14.2 to be released was distributed to developers last week, and the same software arrived in the hands of public beta users on Monday. A version of IOS 14.1 to fix a bug that was initially discovered is expected to be available in the next few weeks, perhaps with a new batch of & quot; iphone12 & quot; models. < / P > < p > there is also a version of IOS 14.2 that has been provided to developers and public beta users. IOS 14.2 introduces a new Shazam music recognition function to the control center, and also brings some other apple music related control center adjustments. < / P > < p > as of Monday, about 26% of active iPhone and iPad iPod touch devices had IOS 14 installed, and earlier today, the first jailbreak for IOS 14 devices was released. Due to Apple’s new interception measures, jailbreak only applies to A9 chips and earlier devices. Global Tech