Hey Justin, I also have 2001 X5 and mine is 4:3 and as Jeff said you probably have MKIII system. I upgraded mine (had 3-1/17) to 3-1/63 and I have all the CDs needed. By the way if you have version prior to 3-1/18, you WILL need a so-called "Key CD". Don't start the upgrade process if you don't have that. Let me know if you need more info.