The only thing the radio will change is your signal strength (+ or -) and your battery life!
If you want to flash a radio check
this thread for all of the radios.
i suggest the Telus radio or the US Cellular radio. Telus is the best IMHO.
To flash the radio follow my simple instructions.
Flash a radio!
i would suggets you use the
Telus Radio V1.04.05V.
the spring v1.11 isnt very good as it is meant for the diamond but someone converted it for the touch pro.
First off extract the files.
Then run the ROMUpdateUtility (make sure your phone is plugged in the computer).
Then proceed through the steps (will look just like the screen for unlocking or flashing a rom).
It will start flashing the radio, it goes very quick!
and once again DO NOT UNPLUG YOUR PHONE TILL IT SAYS FINISHED!
after you see the Successful screen hit finish and unplug your phone!
your now rocking a new radio!
UNLOCKING OR FLASHING A RADIO WILL NOT HARDRESET YOUR PHONE!
but it is advised you back it up just to be safe