[ via MacMinute ] The Power Mac G4 Firmware Update 4.4.8 will run only on Power Mac G4 computers with mirrored drive doors. The Power Mac G4 Firmware Update 4.4.8 improves fan control behavior and reduces high speed fan cycling when running in Mac OS 9.To complete the installation, you must follow the instructions that are presented after you exit Software Update. The updater will remain in your Utilities folder after you are finished