I'm working on my own theme, and am having some trouble with it. I made my own cydia repo, and have successfully downloaded a theme from it. My problem is, when I download my theme, it appears in winterboard, and is in the right place on my ipod, but it doesn't work after respringing. I remembered reading something about needing to change file permissions, so I looked at the file permissions of another theme, and it looks like this is the case. So my question is, how can I change the file permissions on my computer, without uploading to my iphone first?