I don't know about deflated balls but I do know that the Lethal balls that I have been purchasing lately are playing just like the free balls, from Tee to green. I know the lethal balls are low budget balls, but I've never had any problems with them till lately, I've even had people with smaller drivers, using the free balls out driving me, but not only is it the distance, I'm not getting backspin on Tee shots, approaches, not to mention how the ball rolls when putting, I don't think its corrupt files, I thinks its just another gimmick to get you to spend more money on higher priced balls or just a sleazy way to generate money with their free balls posing as a name brand ball.