QuickGPS problem on TP2?

[spunky2008]

My Sprint Touch Pro 2 is always poping up msg recently saying that the Quick GPS Data needs to be updated. However, every time I am trying to download data, it gives me an error message saying:
"Data Activation Failed
Location settings must be on that the latest satellite data can be used to
speed up GPS position."
I know how to enable location settings by going to
Phone->Menu->Options->CDMA services->location settings
but even I set it to "ON", I won't be able to update with latest Quick GPS data.

If I manually turn it "OFF", then the next time I am trying to run QickGPS, it will ask me to turn location service ON and I still can follow it to turn it "ON". However, by either of this two ways to turn location service "ON", I won't be able to update the Quick GPS and it is always showing the data has expired for several days.

Does anyone here know how to solve this issue? Thanks!

PS: I installed g-map and it seems working with GPS although the location showing there is very inaccurate. And another thing I found is Sprint Navigation never work for me and always say GPS not initiated...