Nope, there a beta version of winpwn for windows, you can unlock it but need to use installer.app( as i read it ) to install BootNeuter to flashed ur BL( correct me if im wrong ).. HERE is the link for beta version of winpwn and HERE is the tutorial for windows version of winpwn.. it still in beta but i saw a lot of people success in it, and you dont need to unlock it again when new firmware comes out ( correct me if im wrong also ) and can update unding itunes if im not wrong, but its better to use MAC OSX version winpwn, it is say its more stable than windows Winpwn....