Nitro+ 4GB reflashed, GPU opts are loaded, but Mem Voltage set to 1000mV regardless of my settings. So all runs at 1000mV instead of 900-875. On windows I can undervolt and it preserved by drivers, on Linux still no-go.
If you are not able to find one single working tool to set voltages under Linux, why not just code it into BIOS if you already reflash it?
Because as I wrote above, GPU frequency/voltage for P1-P7 is read from modded BIOS and used. But for memory only P1 frequency was set, but voltage still is default 1000mV instead of flashed value. I don't know why.