Big Sur on iMac 27", Mid 2011, flashed 4GB NVIDIA Quadro K4100M by Nikey22, having issues with screen brightness, any ideas? Brightness control was working with Catalina Patcher, after installing Big Sur
Nvidia Quadro K4100M 4GB MXM Mobile GPU Graphics HP Z1 E5Z77AA [K4100M E5Z77AA] - $713.70 : Professional Multi Monitor Workstations, Graphics Card Experts
K4100M Nvidia Quadro 4GB GDDR5 256-Bit MXM Mobile Video Graphics Card