The first and most common is by restoring or erasing an iOS device that has Find My iPhone turned on (typically with iTunes or 3uTools). There are multiple ways to cause Activation Lock. In simplest terms, Activation Lock occurs when an iOS device does not have valid Activation Records and Find My iPhone (FMI) is turned on. Most indirect methods allow you to complete the setup assistant normally after passing the activation screen, since it is nearly impossible to differentiate spoofed activation records from legitimately generated activation records (more on this later). Therefore, even though Setup.app still exists, the device believes that it was activated normally, so it no longer views Activation Lock as a necessary step in the Setup Assistant. The goal of indirect methods is slightly different- rather than removing Setup.app by deletion, they trick the device into thinking that it has valid activation records. The goal of direct methods is to create a situation where the device has no Setup and therefore has no choice but to load the SpringBoard, the next highest process after the Setup Assistant (Setup.app). The most well known platforms that make use of this exploit include checkra1n, ipwndfu, and checkm8-a5 (arduino). All modern-day bypass methods are possible because of the extremely powerful and unpatchable checkm8 bootrom exploit that allows us to modify the root filesystem of iOS devices through SSH. Depending on the device model and iOS version, an iCloud Bypass can be accomplished either directly by deleting the Setup.app directory from the root filesystem, or indirectly by either modifying existing activation executables or injecting spoofed Activation Records. A Complete Guide to Setup.app and Activation Lock Written and Edited by Apple Tech 752, Security Researcher and Bypass Expert What is an iCloud Bypass?Ī bypass is the process of removing or mitigating the effects of activation on iOS devices.
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