I regularly reverse engineer components of iOS and have done so since the first iPhone was released. Never seen anything like a "skeleton key" and there is cert

I regularly reverse engineer components of iOS and have done so since the first iPhone was released. Never seen anything like a "skeleton key" and there is certainly nothing like that in place now. Starting at iOS 10, firmware components have not been encrypted (obfuscated), so you or anyone else can also reverse engineer it.