Okay new to JB here. I just did my first JB on Friday and my question is in regards to iTunes now. Everytime you sync iTunes does a new backup. This appears to overwrite the previous backup that was done. So my last backup was before the JB. Now if I sync my iPhone won't it overwrite my backup? So if for some reason I need to un-JB won't my backup be JB'en? Or am I not looking at the JB correctly?