So, google maps, checked the 'use gps' in the menu. Popped up '54KB. Seeking GPS satellites (0)...' So, I'd say it is not working.
As far as the Sprint ROM, I got it off this ftp site
Location:
ftp://ppcgeeks.com/Titan/RUU/
filename: RUU_TITAN_SPRINT_WWE_3.35.651.2_RS_TITAN_3.35.04_4 350H_SPCS_AM_Ship.exe
If this is the one you're referring to, I don't know - it is the one I used however. Should I retry this with a different ROM?
I'm also having a hard time seeing my unit outside, even in shade. I've set the backlight to full - are there other settings that I haven't found that I should tweak?