The Power Mac G4 SuperDrive Firmware Update 1.0 application installs new firmware on the SuperDrive which addresses an incompatibility with 4x DVD-R and 2x DVD-RW media, and the 2x SuperDrive in the Power Mac G4. You must perform this update if you intend to use 4x DVD-R or 2x DVD-RW media in your Power Mac G4. This update also enables you to eject audio CDs that are copy-protected or have mastering errors. This update is required only for the Power Mac G4 (Digital Audio), the Power Mac G4 (Quicksilver) and the Power Mac G4 (Quicksilver 2002) with an internal Apple SuperDrive.