If you do a google search on blue and white G3 jumper settings and get some hard drive jumpers (how most put G3 and G4 stock CPUs in to overclock) then you can check jumper settings. There should be a chart with all three machines together. Beige, B&W, and the G4.

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Look at my post again. I already gave a link to the jumper settings.

I could screw with those settings for the rest of my weekend but I don't have the time to go through every combination of bus speeds and multipliers. I've already run through both the 66 and 100mhz bus speeds and while both get me chimes with the original CPU, neiter do anything with the Sonnet.

If someone could look at their jumper settings or throw a ballpark guess I might at least be able to work from that, otherwise I have nothing.

I just looked through my Sonnet stuff. I see that Sonnet supplied their own firmware updater for the B&W

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You're right. I don't see it mentioned in my own paperwork but this document mentions a sonnet specific update. I'll try and reflash to that if I can find it.