RDS-TMC GPS Gadgets and Navigation Articles

I am new on this forum. This TomTom Go 920 is my second GPS after a Magellan. Not very happy with the TomTom.
Hope to learn a lot from you Forum and find answers for my questions.

After updating my Go 920 is did all the restart and everything . After re-start on the screen it is saying 530 , all the menu is different at the TOMTOM HOME at connected device say 920 but on the device say 530.
I called customer service and they are (sorry) useless. Somebody can please help me.
Thanks