After updates why is my TomTom One not connecting to satellites?

I bought the TomTom one in 2008 and it has always worked well. Recently I updated it before I started on an out of town trip and when I tried to use it I got two negative messages. Message 1. Poor GPS Reception and 2. Waiting for a Valid Satellite Signal. it would not proceed any further. I've reformatted and reinstalled the system but still the same result. What can I do?