yah all you do is go the the dashboard, go to settings then memory click a till it says storage divices then hit y then hit xx lb rb xx and it will say preform maintinece on xbox say yes then all patches are gone. then play game it should say update. say no then you can do all the glitchs on the old zombies map. the new map will disapeir but you can just update and will come back
You can easily delete the updates, and blaze you are wrong so don't listen to him. Once you are happy when you done the glitch you can easily go back to normal by downloading the updates.