The soldering looks easy enough, but the other stuff is a mystery to me. "Copy all the files to a directory on your phone" How? "Run ienew". How? "Find an old 3.9 nor dump" Where? etc
A guide to opening the iPhone up could be handy too, so we can have the right tools at hand before we start, and to prevent easy mistakes.
Guess I'll hang on for the software unlock.
Good news all the same