Apple iMac ATI Radeon HD Graphics Firmware Update 1.0.1
is for iMac computers with an ATI Radeon HD 2600 Pro or ATI Radeon HD 2400 XT graphics card installed, running Mac OS X 10.5.2 or later.
It updates the ATI Radeon HD 2600 Pro or ATI Radeon HD 2400 XT graphics card firmware in the iMac to improve system stability.
To complete the firmware update process, please follow the instructions in the updater application (/Applications/Utilities/iMac ATI Radeon HD Graphics Firmware Update.app). The updater will launch automatically when the Installer closes.
Boot ROM or SMC Version Information: After this update has been successfully completed, ROM version will be: 113-B2250L-259
NEILATKINSON Having the, until yesterday, top of the range 24" 2.8ghz iMac, I thought that this update would be for me but on opening it tells me its not required. What iMacs does is affect?? (Version 1.0.1)
MACMODELA I thought so as well, with the same system. However I let Software update dictate which updates are for my iMac, MB and G4. This one did not show.
This doesn't answer your question, but should give you confidence in that message. Apparently it is the 2600 PRO card, which we do not have. (Version 1.0.1)