Stanzdaman

Hi, I want to upgrade my iDrive in a 525i touring Japanese import to a NZ unit. I think the unit i have now is the CCC model but i can't use the radio or DVD player and can't find any way to change the setting so it will at least get NZ radio. I would like to buy a second hand NZ new iDrive computer from a BMW wrecker and swap the units. Is that something i can do as a straight swap of the unit in the boot? Thanks in advance!