Unhappy missing file!! RUU_ETERNITY_Radio_Signed_17.5006.08.27_17.08.50.0 6.7z

hi,
i've been trying to flash my htc titan (eternity x310E) , i have updated the rom using RUU,
i started by, following the steps in file DFT_HSPL_WP7SG1, after that when HSPL was set up, my phone restarted and got frozen on htc logo screen but i read a similar problem in a forum and the user had continued installation of DFT Eternity 24 langs Freedom V1 Pearl Edition after which the user stated his similar problem was solved.
so i also followed the same step. it got installed successfully but the starting screen problem persists. in an another forum it was stated that i need to update my radio by flashing this file "RUU_ETERNITY_Radio_Signed_17.5006.08.27_17.08.50. 0 6.7z"
i checked this file in several locations and websites but everywhere its missing or no longer exists.
SO if this is the solution to my problem can you please tell me where i can find this file.
please help me as i am new to this and donot know much about this whole thing.
thank you