Cannot get RUU to install the Titan Radio!

[YukonJack]

I recently received a new xv6800 (my other one had some water damage). I had installed a GPS radio and custom rom on that, but like anything, with time one tends to forget

Well, I am back now, and I need to get some GPS action on this new phone. I installed the Alltell HTC image that put the latest GPS radio on my phone, and cooked a 6.1 GPS enabled ROM, did the QPST edits, and I still have no GPS. I want to go and flash the lastest Titan image to the phone, but everytime I try, I get an error.

I have the latest radio image, that I extract to the RUU folder. I run RUU but I get an error that says I cannot use the program to update my phone. Not sure what that means. I have a card reader at work that I will try out tomorrow and see if that helps. So, I guess I have two questions.

Whats with RUU?

Whats with the Alltel HTC image and radio, and why doesnt it enable the GPS?