Liteon 163D update firmware to make it Region Free

I just bought a Liteon 163D DVD player, but I want to make it region free. Drvinfo told me that "This drive has region protection- (region2), the firmware is GHR3.

¿What must i do to make it region free?

I had all my IDE channels busy and I shoulded buy a Promise Ultra ATA133 controller. DVD works fine with it but I cant activate DMA mode ¿Why?

Thank you very much and best regards from Spain

Go here for the region free info mate