I turned my GPSmap 62st on and it tells me "cannot unlock maps" when I select "OK" it then starts up and the only map on my device "Recreational Map Europe v3" is then shown, this map came with my device and I have not bought any other maps, when I open it in Garmin Mapinstall it says "No unlocked maps were found for this device." my device firmware is up to date, I have done a master reset but it made no difference, the only thing prior to this happening was that I put on a BajanNav V02 04 1 map of Barbados, it was a free download from their website and my device did work fine afterwards, I have since removed it, I do not have an SD card in with any other maps, I am running out of idea's what to do