flash/mod means to change ur current stock 360 to a modified 1 so that u can play copied/pirated games/dvds . so u don't have to pay 280 riyals for games anymore. just buy a dual layer empty DVD for 6 riyals and burn the game. or buy the pirated ones for not more than 25 riyals a copy.I take 15 mins to mod a console... call me at 7404171 or 5987108 regarding da charges..
peace.