Meh. The FBI has already suggested that it might request the code signing certificate and the full source tree. With those in hand, I'd expect the NSA programmers could get this done in a few months.
> With those in hand, I'd expect the NSA programmers could get this done in a few months.
The NSA increasingly is not a room full of mathematicians, but an IT outsourcing customer. But in neither case would they be very competent at creating a variant of iOS that doesn't touch flash memory and enables brute-forcing the PIN.
