Patching iGPU device id with opencore

Hi,

I'm currently trying to use opencore in order to spoof the device id of my HD Graphics 4400. In order to do so, i've added the device id an platform identifier of an HD Graphics 4000 in my config file:

Root - DeviceProperties - Add - PciRoot(0x0)/Pci(0x2,0x0) - AAPL,ig-platform-id (Set to data and <01006601>) - device-id (Set to data and <66010000>)

However, when booting osx 10.8 (need an older version, vm has no acceleration) the GPU is still not being recognized and it hangs after missing bluetooth transport.