Dunno really. The whole BPPC failing/not working properly thing is quite dependant on voodoo rituals and the way the stars are aligned.
I have an early BPPC (so I guess rev 0) which I had to send to P5, they removed the 66MHz crystal and used the single 50MHz for everything. Apparently the higher frequency caused trouble. On the accompanying note it said something like 'upgraded to rev x', where the x was something like 1 or 2.
Here's a link to a newsgroup posting of mine regarding the rework P5 did on my BlizPPC.
