oh my God Toneedo ur a God dawg, how can I repay you. Im gonna make a post so nobody makes the same mistake. Thanks everybody

yeah sorry Monster I was so desperate that I looked everywhere except in the sticky, sorry everybody, thanks again

I had same issue
 

I could not find a sticky that specifically addressed my problem (stuck in intial boot, with it saying "no radio" and never going past there.

Finally found a post about putting it bootloader manual, loaded the sprint official rom, and it fixed it, all is well.

I reinstalled 3.15, but haven't tried the 3.16 yet, as my phone got stuck in a constant reboot state with that rom installed, and I did everything right there..

anyways.. this board has been a tremendous help. I just wanted to add my $0.02

I am also stuck with the logo/no radio screen, but going into bootloader and reflashing old ROMs didn't work.

did you try to run the "re-locker"? since you likely tried to install an unauthorized or newer rom, you need to run a "re-locker" to prep your phone's bootloader, then run the official sprint rom..

worked for me.