EU 2009.1 does not have Iceland.
On navteq.com you can buy individual cd:s or cd sets for region.
Check it out, you can check with your local dealer as well.
Since MK IV is VDO developed unit, you can use maps that are made for VDO, Carin, and also some other car brands.

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X5 4,4i-06 Current
330Ci Cab-03 2007-2008
MB E55 AMG-03 2006-2007
Z3 2,8 Roadster-98 2006-2007
X3 2,0d-05 2005-2006
320d-99 1999-2005