I used the same link on Thursday that I used on Tuesday to download the program and it downloaded the ATT version without removing Telenav 5.1 so I DON'T THINK SO. I used the same pin number to log in to both versions. As I am new to Telenav,(and to the 8310) I am still comparing the two programs. Once I am done doing that, I will probably remove Telenav to free up memory.

First impressions, Att Navigator has more features but it also has some bugs (but so does the 8310) than 5.1. As I use it more over the next couple of days, I will get more specific.