Hm, so you don't need to do something like this? -
How To: Configure GPS - PPC Geeks
I remember I had to do that for my diamond because supposedly sprint locks the GPS in order to make you use their navi software..
I haven't played around with TP2 roms yet nor have I gotten google maps on my TP2 but I thought the "use gps" won't work without the "fix"?
Is that what the OP is referring to?