ok so heres the problem i bought this tt xxl 550m that would bootup but freeze when it says tom =tom so it never even got to the gps screen so i went and dl tt home tried to update and got errors so i wiped it clean not knowing i should make a backup of all the software. anyways now i go to tt home and i get only one update and its tomtom application for ONE version 6.560 and so i reboot tt and now i get the flashing X. im new to all this and dont know what all i need on it if anyone can help please let me know what to do Thanks