I updated my Amundsen to ECE12019/20 yesterday and it seemed to load ok onto my SD card..it went into the car and showed as the new version...but now this morning I cant do anything on the touch screen...the map works but I cant access anything on the touch screen ...what have I done wrong? 

Probably nothing, the touch screen being unresponsive in cold weather is something many owners have complained about.

Thank you thats what I was hoping as when I put the card back in yesterday it was ok and the touch screen worked fine...