Just updated to the GT-31 and setup the unit as per instructions but when i switch it on i get a "bad format" message.
I'm using a sandisk 2g card and formatted the card a few times.
I'm using firmware ver V1.2B1114T and the readme files says sandisk 2gig is OK. Have you got the card un write protected and what message do you get when the format finishes 
The card was the wrong type it was a sandisk2- 2g,tried a standard sandisk 2g and now it works fine did'nt realise that there were two types.
