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I changed the driver in my PlayStation 3 now every time I put a movie in I get this message that says region code is incorrect what do I do

It can be a different default region code of the driver which is not compatible with the movies. You should be able to change the region code of the drive for up to 5 times. So change the region of the driver to your place. If you can’t, you can also change the region of the DVDs. Here is the complete guide, check more details