I've erased all files, prefs, etc from my phone and restored. However, there are still remnants from the jailbreak. (ie, percentage of battery left and Make it Mine carrier name change) A. How do I remove these leftover files? B. My main concern is not wanting to pollute my iPhone 4 when I get it next week. Do you think a that once I update my OS, these files will be left behind cause the jailbreak wont even be compatible?