How to restore my iphone 4 without losing Photos, Notes, and messages?

I started syncing my iphone with another programme called "Itools" and now i get this error "Itunes can't read the content on your iphone" and my only option is to restore it. There's no option to back it up or anything, But i need to keep my photos, notes, and messages - very important - So is there anyway i can restore it but keep that stuff?