Researchers drop checkm8-style BootROM exploit for A12 and A13 iPhones

A newly disclosed BootROM exploit affecting Apple's A12 and A13 chips gives researchers a way to break the secure boot chain on millions of iPhones and other Apple devices. The exploit, dubbed “usbliter8” by security researchers at Paradigm Shift, targets a flaw in the SecureROM code found on the iPhone XS, XR, 11, and 11 Pro models, plus other devices powered by Apple's A12 and A13 processors. Because the vulnerability resides in immutable BootROM code burned into silicon during manufacturing,