McCartman - 9/2/2011 07:21
As for not being able to mess with source code on closed OS's - I know this to not be a fact. I work with a guy who messes with the source code in Win XP all the time. There are custom builds of at least Win XP (maybe later ones by now too) on file sharing sites. And those who are heavy into customized jailbreak iOS HAVE to change source code in order to do what they do. The different versions of iOS are all out there on the net for anyone to grab ahold of and do as they wish - same as Windows, Linux, or any other software.