![]() 'The Power Mac G4 Firmware Update 4.4.8 will run only on Power Mac G4 computers with mirrored drive doors. The G4 Powerbook and IBook cooling system is managed by the ADT7467 controller from Analog Devices. This utility enables you to manually program the hardware fan controller of your iBook/PowerBook G4 laptop, increasing the temperature threshold and the fan RPM. What makes this situation truly crazy is that this laptop actually has two powerful FANs which are not used at all by the operating system, probably to save battery power. The code is available on As anyone who has put their hands on this wonderful laptop can confirm, the operating temperatures quickly climb and it soon becomes practically impossible to touch, especially on the bottom under the display. ![]() I sold it for some years and now I decided to make it free and opensource. ![]() G4FanControl G4FanControl is a software I've developed more or less 10 years ago, when I faced overheating problems with my old PowerBook G4.
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