Thank you MisutaaUrufu! It's working now Step 1. Download the combo: https://support.apple.com/kb/DL1905?locale=en_US Step 2. Download Pacifist: https://www.charlessoft.com/ Step 3. Use pacifist to open the combo go to the folder /System/Library/Extensions right click on it and install AppleBacklight.kext and AppleBacklightExpert.kext to their default location. Also go to /System/Library/PrivateFrameworks and install to the default location DisplayServices.framework Step 4. Restart and voila!