Where did you guys get this ThunderRom, assuming that is where you did this, since a few others have said as much. ThundeRom hasn't been worked on in while.
Second, you should be able to flash another rom and use the activate app. I've done it, several times with several S roms. In which case either someone is lying somewhere regarding the rom you are using, or something else is wrong.
As for the radio, the entire system is in the rom. The only way it won't fix it, is if it is something in the phones firmware, in which case you are probably screwed, but I don't think you can mess that up that easy by flashing a rom. Unless that rom has been altered to do so.
One way or another, you guys need to stop messing with those roms not meant for your phone. Especially outdated ones.
Did you not see the [DEAD ROM] in the title?