Power Mac G5 Uniprocessor Firmware Updater 5.1 was free to download from our software library. The software is categorized as System Tools.
From the developer:
The Power Mac G5 Uniprocessor Firmware Update improves general system reliability and restores sleep functionality.
To upgrade the firmware on your Power Mac G5, read through the instructions below.
You can print these instructions so they are available while you upgrade your firmware. The Power Mac G5 Firmware Updater Version 5.1.5f2 is installed in Applications/Utilities.
System Optimization
Device Assistants