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I don't have a Xbox but speaking generally consoles are chipped with the region ID. The only way to get around it is to either change the chip or to 'flash' the chip. Unfortunately either method requires some 'geek' with tools to resolve.
Just had Fifa13 arrive through the post for DS birthday. My dbro has sent this from the USA. It is region 1 obviously were in region 2. We have tried changing locale, it is not working, anyone have any idea if we can get this to work.