From my last ordeal with updating the phone with the test rom I found it easier to update the rom via micro SD card.
You take the file, its a .nhb file and ready for download here
http://forum.ppcgeeks.com/showthread.php?t=20705
And rename it TITAIMG.nbh and put onto a fat 32 formatted micro SD card. Insert the card and reboot the Titan by holding power, camera and hitting the soft reset button underneath. This will boot into boot loader and it will read your file on the micro SD and update.
I just did mine the first time with no problem.......
Good luck!