I've now managed to download this map:
I have copied the whole of my internal drive to a 4GB card,also copied the new map folder to the SD card. I have also copied the Fast Activate programme to the SD card and pressed on each of the buttons in turn. However I keep getting the message
"Problem with Map- You cannot use this mapon this device:Western-and -central-europe-2GB-573. I have tried running the fastactivate programme several times tono avail.