The iMac Firmware Update should be installed on all iMacs to prevent problems with starting up your computer. To upgrade your iMac’s firmware, read through the instructions below. (You may want to print them.)
Note: After you upgrade the firmware, the PRAM is reset and you may need to reset some of your iMac preferences. For more information, see Mac OS Help.
1. Double-click the iMac Firmware Updater icon to start the update.
2. Read the onscreen instructions and follow them carefully.
3. If a message appears saying you need to shut down your computer and insert the end of a straightened paper clip into the Programmer’s button hole, follow steps 4-8 to complete the update process.
4. Click Shut Down in the dialog box to shut down your computer.
5. Open the port cover door on the right side of your iMac and insert the end of a straightened paper clip into the Programmer’s button hole, the lower of the two button holes.
6. Continue to hold the paper clip in the hole and press the Power button on your iMac or on the Apple USB keyboard to start up your iMac.
7. When you hear a long tone, remove the paper clip.
A progress bar will appear at the bottom of the screen as the update takes place.
8. After your iMac starts up, if the update process was successful, a message appears saying the firmware is up-to-date. Click OK.
If a message appears saying the update was not completed successfully, go back to step 1 and begin the update process again.
Apple, the Apple logo, and Mac OS are trademarks of Apple Computer, Inc., registered in the U.S. and other countries. iMac is a trademark of Apple Computer, Inc.
