Apple posts Power Mac G4 MDD firmware for noise problem

Apple has posted a firmware update for previously reported problem with excessive fan noise produced by Apple's Power Mac G4 Mirrored Drive Door models. The new release, available via the Software Update mechanism, carries the following description:

"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."

Several readers note that the update does not the power supply fan noise problem, which affects systems with AcBel-manufactured power supplies.

Knowledge Base article #120171 contains the Power Mac G4 Firmware Update information and a link to the standalone download.

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