hi can anyone help me i originally had a go 530 which broke so i bought a secound hand one from e/bay as i have a sd card with western and european maps on ot when i tpushed it in the new go 530 and tried switching maps it wont let me asi it says that it is not the correct device ive tried tom tom but they want a purchse recipt for the new one i explained i bought it secound hand but im no further forward can any one help me please