Hi there.. Since the 20th of jan 2011, or roundabout there microsoft release a "SYSTEM UPDATE" so i updated my xbox 360 and ever since i did this i am no longer able to play; Call Of Duty Black Ops?.. However My xbox 360 is flashed, so is it only people with flashed xbox 360 this happens too? Does Anyone know why this has happened? Has Microsoft Cracked On to my flashed xbox AGAIN? Someone please help, so i can try to resolve this issue and get back online.. Im new to these discussions so sorry if i placed this in the wrong topics.. Anyhelp would be much appreciated, Thankyou