Windows 7 电脑:
C:\Users\使用者名称\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates
XP 电脑:
C:\Documents and Settings\使用者名称\Application Data\Apple Computer\iTunes\iPhone Software Updates
WindowsVista 电脑:
C:\Users\使用者名称\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates