iphone 3gs 轉新pc, 點backup/restore?

dds

好多paid apps,  contact list, notes.

要backup 邊個folder先得?

試過 copy
C:\Users\Administrator\AppData\appdata\local
..
appdata\locallow
appdata\roaming

copy 晒任何folder 同apple有關的folder都唔得.
用true image,  還完都係只可以還完backup當日installed的apps.  

點先可以完美backup / restore呢?   thank you.