You said you used "blucharts" and I'm not sure the 440 will support more than ONE canrt on a card.
It may also require only a SINGL chart/map at a time and that the chart be named and placed as...
How is you card set up ?
Have you unlocked the map with the "gimgunlock.exe" tool ?
I also find it hard to believe the 2gig is the MAX size the 440 will accept. Some charts are well over 3gig in size.
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