NVRAM fix

[KapnKrunch]

What do you see when you enter "nvram -p" in Terminal?

Here's what I get:

LocationServicesEnabled %01
fmm-computer-name Studio Hackintosh
bluetoothActiveControllerInfo %8d%82%ac%05%00%00%00%00%b3%14x1%c1%e8%88
SystemAudioVolumeDB %f0
bluetoothInternalControllerInfo %8d%82%ac%05%00%00%b3%14x1%c1%e8%88
SystemAudioVolume A

 

[KapnKrunch]

Update: I implemented your suggestions (added the SSDT-PMC.aml, switched from current Aptio fix to OcQuirks+FwRuntimeServices, etc), rebooted, and now iMessage is working!

The NVRAM test:

sudo nvram TestVar=HelloWorld
reboot
sudo nvram -p | grep 'TestVar'

still doesn't work, but I've read that this won't work anymore if switching to the SSDT-PMC.aml method.

I did another nvram -p in Terminal and now got:

bluetoothInternalControllerInfo    %8d%82%ac%05%00%00%93%14x1%c1%e8%88
fmm-computer-name    Studio Hackintosh
security-mode    none
specialbootdevice    %02%01%0c%00%d0A%03%0a%00%00%00%00%01%01%06%00%00%17%03%12%0a%00%00%00%ff%ff%00%00%04%01*%00%02%00%00%00(@%06%00%00%00%00%00 %95<z%00%00%00%00X%85%1d%e0%c4%8d%a3E%89%01%dc%95%fc%9f%08I%02%02%04%03$%00%f7%fct%be|%0b%f3I%91G%01%f4%04.hB%a6*D%b5%aa%95+C%ab==%d9|2%f5l%7f%ff%04%00
EFILoginHiDPI    %00%00%00%00
bluetoothActiveControllerInfo    %8d%82%ac%05%00%00%00%00%b3%14x1%c1%e8%88
SystemAudioVolume    W
LocationServicesEnabled    %01
csr-active-config    g%00%00%00
SystemAudioVolumeDB    %00
flagstate    %00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00%00

So, it appears to me that NVRAM is working, and better yet, the SSDT-PMC.aml NVRAM method appears to work for "200 Series" motherboards like mine.

Truly understanding this is well above my pay grade, but nonetheless, I truly appreciate what you bring to this forum @pastrychef !