第二步失败了,输出如下:
sudo codesign -f -s - /System/Library/PrivateFrameworks/CoreBrightness.framework/Versions/A/CoreBrightness
/System/Library/PrivateFrameworks/CoreBrightness.framework/Versions/A/CoreBrightness: replacing existing signature
/System/Library/PrivateFrameworks/CoreBrightness.framework/Versions/A/CoreBrightness: code object is not signed at all
In subcomponent: /System/Library/PrivateFrameworks/CoreBrightness.framework/Versions/A/CoreBrightne