Whoops, I hope I'm not replying to this answer twice but thank you tgold for your quick reply.
I have a deal for updating my map six times and am trying for the first time to download it. However, the download was rather quick so I needed to find out if it had succeeded. I've had my Start 25 for about 18 months with many Mapshare updates but not a main map download. A couple of weeks ago the device told me my map was six months out of date which I why I'm trying now to update.
Is there anyway I can find out if a map update is available?