The “extra quality” methods leverage a bug in iOS 9’s —a race condition where the OS checks for a lock file after loading the home screen, giving the exploit just 300ms to delete the file before the OS realizes it shouldn’t be there.
For a device as iconic as the iPhone 4s, running its final supported operating system—iOS 9.3.5—getting locked out feels like a premature end for a perfectly functional piece of technology. iphone 4s activation lock bypass ios 935 extra quality