2005-08-12 PowerBook G4 Graphics Update 1.0(Apple) PowerBook Mac Update This update is recommended for the following PowerBook G4 computers: PowerBook G4 (15-inch, 1.67 GHz) PowerBook G4 (17-inch, 1.67 GHz) たぶん、うちの子は該当する(多分かよ…) System Requirements Installation of the PowerBook G4 Graphics Update requires Mac OS X 10.4.2. OSがついてきてませんでした…。