So, you just ran to your computer after yesterday’s Apple iTunes event and downloaded thw shiny new iTunes 9 from Software Update. You’ve got your iPhone or iPod Touch in hand and you’re ready to start playing around and organizing your apps.
You may want to stop for a second first. If your iPhone is jailbroken – you won’t be able to use this feature. You have to upgrade your phone to iTunes 3.1 first.
The springboard (the app that manages displays your home screen and dock) utilizes special commands to communicate with iTunes. In pre-3.1 versions of the iPhone OS, there are no commands to support the app icon movement.
So if you want this feature to work, upgrade to iPhone OS 3.1. But, you will no longer be jailbroken and unlocked.