My 82 year old father replaced his long-serving iMac with a new eMac last year, and now wants to 'cascade' the iMac to his girlfriend. It would be nice to get it running the newest possible OS 9 and OS X, but when I've tried to install them I get prompts that I need to 'update the Firmware'. I have not the faintest clue what that means. The machine is a tray-loading blueberry 266 MHz iMac Power PC G3, machine ID 406, with 32 MB built in, running OS B1 8.5.1. I have OS 9 and X discs that came with an iMac DVSE and an iBook G3/500. What do I need, what do I need to do?