hi there? i can fix gps problem on p9 it is not a software problem. but i think everybody can solve it. (1) download gps test app. (or any app that shows gps signal power) (2) open the gps app and monitor signal power (3) smash any edge of p9 with palm. (4) monitor gps signal again. (5) the signal power will growing up soon. (6) solved!!! your welcome!!!!