I have a G4 Sawtooth that I intend to upgrade with a faster processor. I've been trying to update the firmware to 4.2.8 with the updater from Apple and it refuses to run. I have both OSX and OS 9 on an internal IDE drive. I boot into OS 9.2.2, AND run the updater. When I restart while holding the programmers button I get the tone..... then I get a start up chime and a blank grey screen with no updater activity. Then all goes black, then a second chime and it boots into OS 9 with an error message that the firmware update was unsuccessful. It currently has firmware version 3.2.4f1 which I find no mention of on Apple's site.

Any suggestions? T.I.A

David H