;-)
BPPC card comes with a built in PPC library in its flashrom. This library is called PowerUP. Phase 5 originally pushed it as the PPC solution for OS3.x, however there was an alternative solution available shortly after, called WarpUP (or WarpOS). In order to make it difficult for the competition to succeed, I guess Phase 5 decided to make the library built-in, so that WarpUP wouldn't work if you tried to install it. A solution like BPPCFix kills the built-in PowerUP kernel and let's you install WarpUP as your PPC choice. WarpUP seems to be more popular than PowerUP and I believe it's the official OS3.9 PPC kernel.