well, the easiest way to update the radio is to find the radio file and download it to your SD card. then you have to rename it
TITAIMG.nbh and put your phone in bootloader mode. it will do the rest. that also works for flashing. take the rom and rename it TITAIMG.nbh and put it on your card then bootloader and your golden. make sure to delete the other one off the card first. and then delete this one before you use your card for anything else. also, it has to be in the root file. F:\ it cant be in a folder. if you need any more help this is the thread i used to flash my phone the first time. http://forum.ppcgeeks.com/showthread.php?t=33857