in the iPhone 4s, which is not compatible with the widely used Arduino + USB Host Shield Method
Most activation locks were ironclad. But iOS 9.3.5 on a 32-bit device like the 4S was a strange, specific cracks in the armor. The security protocols were old, predating the modern, server-side dominance of Apple's current ecosystem. There was an exploit—a glitch—buried deep in the setup wizard that only existed on this specific firmware. iphone 4s activation lock bypass ios 935 exclusive
Sliver 6.2 (or newer) + iPhone 4s iOS 9.3.5 offsets. in the iPhone 4s, which is not compatible
Often used in conjunction with the Arduino method to relay device info and delete the setup app. in the iPhone 4s