iPhone X and older, iPads with A7–A11 chips. Maximum iOS Version: 14.8.1.
Checkra1n’s mythic bootrom exploit lineage meets a Windows-flavored beta in version 0.12.4, stirring both intrigue and controversy. Born from a chain of hardware-level vulnerabilities that target older iPhones and iPads, checkra1n has long been the jailbreak favored by security researchers and power users who prize permanence: because it operates at the bootrom level, its weaknesses are rooted in silicon and can’t be patched by iOS updates for affected devices. checkra1n 0.12.4 beta windows