FriedChicken : You can test it, what if you just change the owner and permissions of /usr/Brother/inf, does it fix the issue ?
sudo chown root:lp /usr/Brother/inf sudo chmod 775 /usr/Brother/inf
FriedChicken : You can test it, what if you just change the owner and permissions of /usr/Brother/inf, does it fix the issue ?
sudo chown root:lp /usr/Brother/inf
sudo chmod 775 /usr/Brother/inf