2006 Infiniti g35x Nav DVD update?

Hi, I just bought a new car, It's a 2006 Infiniti G35x sedan with the navigation system. Anyways, the screen quality is very bad compared to my 2007 camry hybrid. I was wondering, If i were to buy the updated DVD for the system, would this possibly be able to make the screen quality a little better? (As in remove the jagged lines everywhere) When I bought the DVD for my camry it did nothing, but i want to know before i buy it for the Infiniti. Thanks in advance!!!