I found a easier way and it makes it perm set.
The blizz firmware worked flawless with voltage settings but the dev fee sucked. I did some testing and digging and found out how he changed the voltage inside his firmware.
He changed the values of the gpio drivers to 1 for lowest setting of voltage. I also found once you set the voltage to 1 inside his firmware it makes it perm set inside the miner reguardless of what firmware you use.
I converted mine over which is working fine. I'm at 700 watts at 384Mhz on all my miners now.
Steps to do this.
1. Installed blizz firmware.
2. Goto global settings and Change the voltage to the value of "1" do not use lowest because then it will reset voltage back to 10 if new firmware is loaded.
3. Flash default antminer firmware back.
4. Check temps you will notice the temps about 10c lower which means its working.
No dev fee, Lower Wattage and lower temps.
Also the settings stay in the miner period forever.
Blizz and I use the same way to change the voltage...it flashes the PIC controller's voltage offset which persists on the actual hash board (its not inside the linux controller). My tool does that exact same thing, without needing to flash his firmware, change the voltage, and flash back...not sure how that is "easier" :p
I guess it makes sense if your that scared to learn 3 command lines and need a GUI to do it.
Great work mate! Please can you take a look into Z9 mini as well? They changed something from Batch 1 to Batch 2 and now we cant OC them any more. They must have lowered the Voltages as the machines become unstable :/