What steps have you taken to do it More info gets better answers.
You go into settings and set your TIME ZONE and your camera settings as to what you want and put it in the car and go for a drive for about 20mins till it sorts out where it is.
You do NOT need to use the time set program. That is only for NON GPS models and the time will disappear if the camera is turned off for a while. It does in my 350 if I leave it off for a few days.
The time set program tells you to set the time for the time you are going to turn the camera on. Eg setting time at 0815 Leaving at 0840 Set it for o840 and turn car on at that time otherwise it will be incorrect.