Hello, I have here a Powermac G4/533 that I need to update the firmware on but it won't boot into OS 9. I spent about four hours reading all the information I could using Google searching under various terms related to my issue, but no one had a workable solution. Clues: I have Tech Tool Pro and found that my machine was manufactured in June of 2001 as a G4/733?! I have a single RAM stick of 256 mb (Samsung) which seems to work fine and tests out as fine. I have three hard drives hooked up, two IDE as slaves (one on an Acard PCI 66 controller card) which both have OS 10.3.9 on and both boot fine, and one IDE as master. The IDE master HD I wiped in Disk Utility, made sure to check that OS 9 drivers were installed in the reformat, and made a single partition out of it (OS 9 drivers are installed on all my partitions). On this drive I installed a fresh copy of OS 9 from a retail OS 9.1 install CD (I had to run it by booting into OS X, running classic, and running the installer from there--the OS 9 CD will not boot!). After installing, I installed both the 9.2.1 and 9.2.2 updates found on Apple's website. After this I selected the OS 9 hard drive as my startup disk and restarted---into OS X! I then tried holding the option key at startup--no OS 9 disk available to choose! I then tried holding the "D" key down to force an OS 9 reboot--didn't work. I then tried to rebless the OS 9 system folder by using terminal and following some commands given on some websites to accomblish such a reblessing (sudo bless -folder9 /Volumes/*my hard drive name*/'System Folder' -label *my hard drive name* -bootBlocks) but it did not work. I tried open firmware booting by following some instructions, but my HD came up as: hd:,\\txbi or something like that, which did not leave me a choice as what to change to force an OS 9 reboot. I found on Apple's website that the G4/533 must have a boot ROM version of 6.7.1 for OS 9 for it to work, but I can't find the boot ROM to check it to see what my OS 9 hard drive has. I need to update the firmware because I want to purchase a processor upgrade and it is necessary to first update the firmware. Anyone know what I can do?