LockBackground Help!

Hello again,

I'm having some trouble with my Lockbackground, it will not apply...
I've tried Lockbackground.png and .jpg still nothing. I've replaced the images in both theme folders:

private/var/stash/themes QISXL/
and
Library/Themes

I would like this to work because I got a weather theme for my lockscreen, and the wallpaper was fine until it just suddenly changed to one of my album artworks and it just happened to be Rick Astley. I feel like its mocking me!
(I think its my album artwork, I've checked theme codes and cannot see anywhere where its fetching for an image)

I didn't do anything to make it change. There is no background image whatsoever in the weather theme folder... Please help!!

EDIT:
The weather theme I would like to work says its seeking for a background image here:
<img src="../../../../User/Library/SpringBoard/LockBackground.jpg"

I'm not quite sure where that would be.. I'm assuming its the default Lockbackground its seeking for. Which I cannot get to work even with my weather theme disabled.. =[

 

I've found out why I can't change my wallpaper.
I have this thing called a Rickrolling worm -.- FML

http://forums.macrumors.com/showthread.php?t=816615&highlight=lockbackground&page=2

Its most common in Australia as we have an open IP or something.
I got it by having OpenSSH which I didn't really need. As I'm using ifunbox (through usb) to access my iPhone. So I wen't to delete it and the Rickroll crap is still on my phone. So I read you can download MobileTerminal and change the OpenSSH password manually, so I downloaded it but it keeps closing. Apparently its buggy with the newer Jailbreak software, btw I'm running Greenpoison. So is there another way I can get rid of this crap? is there a better terminal program?