Power Mac G5 Uniprocessor Firmware Update 5.1.5f2 - is available from
http://www.apple.com/support/downloads.
or direct from apple at
http://wsidecar.apple.com/cgi-bin/n...&platform=osx&method=sa/PMG5UniFWU5.1.5f2.dmg
Please note that this update is for the single processor G5.
I found this article at
http://www.pcpro.co.uk/?http://www.pcpro.co.uk/news/news_story.php?id=63905
Apple states that you must:-
Remove any third part RAM before installing this Firmware Update. After the Firmware Updater has verified that it has been completed correctly, you can re-install your third party RAM.
update info at
http://www.apple.com/support/downloads/powermacg5uniprocessorfirmwareupdate.html

http://www.apple.com/support/downloads.
or direct from apple at
http://wsidecar.apple.com/cgi-bin/n...&platform=osx&method=sa/PMG5UniFWU5.1.5f2.dmg
Please note that this update is for the single processor G5.
I found this article at
http://www.pcpro.co.uk/?http://www.pcpro.co.uk/news/news_story.php?id=63905
Apple states that you must:-
Remove any third part RAM before installing this Firmware Update. After the Firmware Updater has verified that it has been completed correctly, you can re-install your third party RAM.
update info at
http://www.apple.com/support/downloads/powermacg5uniprocessorfirmwareupdate.html