引用: Install : Remove any injecter / GFX device property string / DSDT edit for GFX
Put the kext in /System/Library/Extensions/ or /Extra
Fix permissions in terminal and type : touch /System/Library/Extensions (do it again if you modify the plist).
You still need to put your device ID in NVDAResman.kext and NVDANVX0hal.kext (depending on the GPU generation).
Reboot.