About iMac Graphics Firmware Update 1.0 This update is for 20-inch and 24-inch aluminum iMac computers with the ATI Radeon HD 2600 Pro graphics running Mac OS X 10.4.10 with iMac Software Update 1.2.1 or Leopard with iMac Software Update 1.3.
It updates the graphics firmware on the ATI Radeon HD 2600 Pro to improve system stability.
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