If it is a DVD based Nav computer in the boot then yes.

AFAIK, the X3 was only fitted with the Mk4 DVD Nav but it could have been swapped out before you bought it (unless you had it from new).

Have a look behind the panel on the passenger side in the boot and if it has a DVD logo on, you will be good to go. Just download and burn the V.32 image (see the sticky at the top of the forum page)... and if you want to use a 2009 Map DVD, your nav will need to be updated anyhow as it will require the new features and dual layer capability

HTH.