I've just hit-and cleared-what will probably be the first of many SNAFUs I'll encounter along the way.
Updating the firmware, of course, require pressing the programmer's button on the front of the computer. I've done this many times for firmware updates on various G3s and G4s, but never on a Quicksilver. I'm familiar with the distinctive tone that the computer makes, and the overall process of it.
The programmer's button on the Quicksilver is TINY and recessed-small enough that it requires a paper clip or some other tool to press(I almost went and dug out the box for my iPhone 3GS to get the SIM eject tool out of it

). In any case, when doing the firmware update, I thought I'd pressed the button, although the computer didn't make the tone I usually associate with pressing the button. The computer booted to a purple screen and gave me some text about the firmware update stopping and that it would boot in 30 seconds. I took this to mean that the firmware update was successful, so I proceeded on with installing the processor and running the software updates on another computer.
I figured while the software update was running, it wouldn't hurt to boot the "victim" and make sure I at least get a chime and get it to boot to the flashing folder. Unfortunately, it wouldn't do that. I tinkered with raising and lowering the voltage, as well as the clock speed, but couldn't get anywhere. Finally, I decided that maybe I hadn't updated the firmware correctly.
So, the factory processor(or actually my upgraded factory processor) and heatsink went back in, and the computer booted right back up. I shut down the computer I'm using for software installation after one cycle of updates, pulled the hard drive out, and put it back in the "victim." I ran the firmware tool again, and then started the computer up making sure I was pushing the programmer's button firmly. I got the expected result-a long tone, the power LED flashing rapidly, and then a reboot followed by a message on the screen that the firmware update had been successful.
So, now I'm back to installing software updates. I did at least get the computer to chime with the Gigadesigns processor installed, so I have high hopes that I'm at least getting somewhere

.