HELP (please) X5 after MK4 upgrade have lost ability to go to service mode

[nekountze]

I recently installed Bimmernav.com's MK4 Nav in my 2001 X5, upgrading from it's MK3 Nav computer. I appear to be in Euro mode - short distances in yards, etc. which is ok, However, I am unable to use the Info and Select buttons to enter Radio Service Mode and Nav Service Mode. Do I need recoding?

Also, what is CODE used for on the Main menu? It is sometimes available, sometimes not. I can inpur 4 numbers, but don't know what it is used for.

I have wide screen display, non-dsp radio, cd changer, and recently installed bimmernav.com's bluetooth kit if that helps. Thanks in advance ofr any help.