I've had an iMac for a while but have never used any OS older than mountain lion. I was given a broken G3 /350 indigo a couple of weeks ago. It just beeped when I first tried it, a bit of googling and some replacement ram and it was booting into OS 9. I looking into putting that latest possible OS on it and here's when things went wrong.. I booted from cd into a tiger install disc. Foolishly in the installation I used disk utility to format the drive for a completely fresh install. Unfortunately it then said the install wasn't possible because it needed newer firmware!? It seems to only way to update the firmware is via the OS? Obviously I can't do that now because the drive is formatted and I don't have a copy of OS 9! Any thoughts please?