When the logo goes away you should have a blank dark screen. This signals the end of that procedure.
Then when you depress the bottom button to turn the screen back on, it should be back to normal.
HOWEVER every once in a while, the cord and iTunes notice are still there.
In that case, proceed to the second procedure and shut the phone off entirely.
When I say that I don’t mean just clicking down the top right button. That just shuts the ONLY THE SCREEN off but NOT the ENTIRE phone. You want to shut the whole phone off totally b
To do a complete shut off you press both buttons again and then when the slider bar appears on top, you slide it from left to right. Then keep holding down BOTH buttons together until the apple logo comes up. After a few minutes for it to do it’s thing (just like on the reset) the logo should go away and leave you with a blank screen.
When you push the bottom button to turn the screen back on, the cord and iTunes symbol should be gone and everything back to normal.
If you do these two procedures EXACTLY as I’ve described and the cord symbol is still there, then call Apple at the number I listed above.
I have no idea whether the jailbreak screwed things up or not since I chose not to jailbreak mine.
But I have a hunch it may have more to do with Apple trying to force a sync. I get the exact same cord and iTunes thing without a jailbroken phone. I just don’t need to sync it as often as their (apparently) built in software nags want me to.
It’s been over a year since the last sync I did :). I sort of figured out combining these two procedures one after the other kind of accodently. I guess necessity really is the mother of invention.