Hi i am going to tell you on how to change the Notification Center Background on iOS5 there is a new thing that you have to change now so i will show you how to do it hope this helps.

First i will show you on how to change the Notification Center background. MAKE SURE YOU RESIZE YOUR PICTURE TO 640×960 FOR THE BEST RESULTS !

Use Cyberduck or WinSCP to get to the root of you device then go to System/Library/CoreServices/SpringBoard.app then overwrite BulletinListLinen@2x.png with you background for example. MAKE SURE YOU BACK IT UP !FIRST

Old BackGround

New BackGround

DO NOT RESPRING YET

Now you will have to go to var/mobile/Library/Caches and delete com.apple.SpringBoard.notificationCenterLinen

NOW RESPRING

Get your Wallpapers from iOS-Graphix.Com ! Don’t forget to rename image to BulletinListLinen@2x.png

EnJoY

Source : Insanelyi.Com