Audio Systems: Ford Explorer 2008 DVD Region Lock out, region dvds, ford explorer

Question
I just bought an Explorer with the Ford Entertainment System (DVD) Bought it in Mexico and came with DVD REgion 4 as standard. I own many Region DVDs that I have purchased in the US. Any suggestions about how to unlock the FES and make DVD player a multi-region one.
Thanks

Answer
sorry i have never seen your vehicle or the new dvd system
but the old 2004 Lincoln dvd have the same problem, when the vehicle was purchase in Mexico we use the remote and when in to the set-up menu and there was a way to  change the zones and ratings  
you just have to play with the settings
good luck