Do I understand this correctly: does this mean that every iOS device from iPhone 4 to iPhone 8 + iPhone X could be unlocked for data access if you had physical

Do I understand this correctly: does this mean that every iOS device from iPhone 4 to iPhone 8 + iPhone X could be unlocked for data access if you had physical access to it? Also one of the following reply to the twitter link posted somewhere in the comment here [0] has the following: `During iOS 12 betas in summer 2018, Apple patched a critical use-after-free vulnerability in iBoot USB code. This vulnerability can only be triggered over USB and requires physical access. It cannot be exploited remotely. I am sure many researchers have seen that patch.` This could explain the recent price reduction of bounty for iOS (lower than Android) [1] [0] https://news.ycombinator.com/item?id=21091247 https://news.ycombinator.com/item?id=21091247 [1] https://www.zdnet.com/article/android-exploits-are-now-worth-more-than-ios-exploits-for-the-first-time/ https://www.zdnet.com/article/android-exploits-are-now-worth...