Efudd - Do you know if the Z9 has the same micro on the hash board as the z9 mini? Does it use the same 4(6) phase VRM? Would you be willing to give up some of that data So I don't have to go through the same disassembly process (I was about to do this then I saw your post)?
( the 2/3 batch z9 minis are current-limiting the hash boards)
Z9 is also current/voltage limiting. I know it kicks in around 700Mhz, I'm unsure where the cut-line is, however.
I'm 95%+ sure they are the same -- my last mini went out the door Saturday, so I cannot confirm at the moment.
Voltage finagling is on my TODO list for the near future (depending on interest).
I also expect what I've done here will work for the mini (mind you, the binary patching would be different, but...).
On my TODO list after/with the "Voltage finagling" was to work on the mini -- with the intention of creating a "unified firmware" that works on both (assuming I can properly identify the hardware).
-j