Gps.conf in etc/gps.conf.
Try see this file with rootbrowser. This app available in app store.
If you cant found in etc/gps.conf, the trouble is in your Rom.
Gps.conf by country
link : m*box*com/shared_item/https%3A%2F%2Fapp.box.com%2Fs%2Fw57s1v1n3hie7l5lk28i
Note : replace the star thing...