You have to be more specific and also best to put what you're trying to acheive. Do you want to sell it JBen? If you do a restore to default in iTunes it will return the phone to the way you bought it. When it prompts you just setup as a new phone. You will lose your JB but you can just re-JB.
You have a couple options it depends on you. I personally ould reset it and set it as new then redo the JB. It will be JBen again so yes it will be like it is now but you would have to redo your apps, themes, etc. You coukd just unsync all your info off the phone and it would still have all your themes. You could uninstall all your apps to get rid of your data and then reinstall but that's so much work. If you have a Mac you could just restore with an ipsw which would wipe the phone and it would also be JBen already.
