Yes , now you can add your own background image to iOS 5?s Notification Center, if your device is jailbroken.
A new tweak that appeared in Cydia lets you change the background to the Notification Center image of your choice .
The ‘Custom NC Background’ enables the user of a jailbroken device to change the background Notification Center and put a picture of his choice from the photo album.
The ‘Custom NC Background’ works flawlessly without causing crashes and delays in the operation of Notification Center. Indeed, it requires the presence of Winter Board and collaborates regularly with IntelliScreenX.
New tweak released Cydia, CustomNCBackground , gives us the ability to change background in the notification center very easily through the configuration of the appliance, we choose any picture we want of them stored on our iphone. This tweak can be downloaded free from the repo’s modmyi .