The easiest hing to do in Maptis is turn GPS-mode on, press Start--> GPS info
There you can see if it trackes satellites and if he lock's them.
It could take a while before he locks the sattelites, just keep the PSP very steady (Even holding it in your hands doesn't improve locktime, so usually i lay it down on the ground/grass in its protective case).
And also play a bit with the angle of the GPS-transmitter.
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