Step 1 – Open the Terminal.app
Either by start typing Terminal on the Spotlight, or by going into Applications -> Utilities -> Terminal.
Step 2 – Open the hosts file
Open the hosts by typing on the Terminal that you have just opened:
sudo nano /private/etc/hosts
Type your user password when prompted.
then i scrolled down to the bottom, and where it says :
127.0.0.1 gs.apple.com, I just added a # and a space before it. Then saved it, and it updated without a problem."