Can't find firmware update in folder it's supposed to be in

I just purchased the iMac software install CD for Mac OS9.2 and tried to install it on my very old blueberry imac which is now running 8.6. I started the computer up from the CD and everything loads in correctly to start but when I try to install it, a message comes up saying that the firmware needs to be updated and that it is in the CD extras folder. When I open that folder I don't see anything that says anything about firmware updates. Am I overlooking something or is it called something else and I'm just not looking for the right thing? I've exhausted every book I can find and there isn't much about OS9 or firmware in any of them. I don't have that computer hooked up to the internet at the time so I can't download updates. I have access to an iMac (intel) if I can do something to a disk (I've honestly never tried it yet with the new iMac) I just hope you aren't going to tell me I bought the wrong disk, I have a dreadful feeling that $40 later I'm out of luck. I've already been majorly taken by the apple store that screwed up this computer in the first place (sold me and installed the wrong memory, then when nothing would work properly said the memory wasn't right, they took OSX out and said it would not run on this computer, installed OS9 without charging me because of all of the problems, but never gave me a disk for it. Then one day the dreaded blinking question mark appeared and OS9 would never run again so I'm back to good old 8.6 and thought I'd try again. I'd appreciate any help you can offer. It would mean the world to me if I could get this running in OS9.

blueberry imac 333MHZ Mac OS 8.6 or Earlier upgraded memory