Couple Apple system updates for the B&W G3 Mac to enable it to run Mac OS 8.6, files included are:
2940U2B Firmware 1.2.smi
Apple-GV 56K Updaters.smi
ATI Video SW Update 1.0.smi
FireWire 2.1.smi
G3 CD Update 2.0.smi
G3 Firmware Update 1.1.smi
Mac OS ROM Update 1.0.smi
Those updates are for the B&W G3 PowerMac.