Apple today released Power Mac G5 Uniprocessor Firmware Update 5.1.5f1 which improves general system reliability and restores sleep functionality.
To upgrade the firmware on your Power Mac G5, read through the instructions below.
The Power Mac G5 Firmware Updater Version 5.1.5f1 is installed in Applications/Utilities.
1. Save changes to open files and then quit all other open applications, if necessary.
2. Open the firmware updater.
3. Click Shut Down in the Firmware Update window to start the update. Wait for your computer to shut down, quit any applications and save changes if necessary.
4. Press and hold in the Power button on the Power Mac G5 until you hear a long tone or see the Power button light flashing.
The firmware updater starts automatically. A status bar shows the progress of the update. You may see more than one status bar.
After the update is complete, your system restarts automatically. When a message says your computer