Take your SIM out of the Nexus One
Power on the device
Turn WiFi on
Turn GPS on
Open application: GPS Status
Go into its Settings menu
Click on GPS and Sensors
Click Manage A-GPS state
Click Reset
Click Manage A-GPS state again
Click Download
Now put your phone on a stable, straight surface in order to enable the
phone to get a lock. This time, you’ll see your phone get the lock back
way faster than before.
With that done, now it’s time to put your SIM back in and use the network to secure a quick GPS fix as well.
