I made that mistake too not long ago, so things like time zone and other things you dont have the options for if you dont have the GPS antenna and the rear camera connected.
And it sort of make sense, if you dont have the GPS antenna connected, then you cant set a time zone, so your only time/date option will be to manual set time and date.
Likewise the rear camera, if it is not detected the camera think you have a single model, and so you can only choose the feed from the front camera and dont have rear or PIP as options as that would necessitate a rear camera present.