I have root permission but still I am not able to change the folder permission
sudo chmod -R 777 /Applications/Safari.app/Contents/MacOS/ chmod: Unable to change file mode on /Applications/Safari.app/Contents/MacOS/: Operation not permitted
But at the same time I am able to do
sudo chmod -R 777 /Applications/Firefox.app/Contents/MacOS/
ProductName: Mac OS X ProductVersion: 10.11.2 BuildVersion: 15C50
Could anybody help in identifying the issue?