i need you help " samsung s8003 "
 

I have samsung s8003 and google maps has spoiled and i cant reinstall it again :s ... and when i go to GPS it tells me no satalite available and i downloaded another navigation application it tells me problem in connection with the setalite .. so what does that mean ?
....... does my phone have GPS or not ?! or is it locked so when i flash my device to s8000 .. will it work or not ?