Okay, I looked around and my OS 9.1 Install CD is the only one that has a firmware update for your tray-loading iMac G3. It is firmware update version 1.2, release date May 19, 1999. It is about 1MB in size. I can send it to you via email or you can get it from Apple's web site, under the support category. If you do the latter, you'll have to hunt around for it.

73s de Phreakout. :rambo: