I have iPhone 4 version 4.2.6 and I've jailbroken the phone. Have Cydia and Winterboard installed and I downloaded a Star Wars LockScreen. However, when I select it in Winterboard and respring the phone the lock screen never changes. I have it checked and at the top of the list in winterboard. Is there something that I am missing that I need to do to enable the lockscreen theme to work/override the default lock screen?