Alright so I got an old iMac g3 at a thrift store about a year ago. It booted up with the question mark folder, so I tried to install with one of my OS 9 discs. I can boot up but it doesn't let me install because I need to update the firmware. So then I used a CD for OS 8 but whenever I tried to install it seemingly finished installing but when I boot up again, the question mark folder reappears. Is this broken or am I doing something wrong? It's a tangerine G3 (tray loading) with i believe 256 MB RAM, a 266MHZ G3, and a 4GB hard drive.