do you have fastboot package?
you have to make a folder in local disc C (c:// fastboot) & extract the fastboot package into this folder
fastboot package for Windows
fastbootpackage for Linux 64bit
fastbootpackage for Linux 32bit
cd/
cd fastboot
fastboot flash radio Radio.img
fastboot reboot
cd/
cd fastboot
fastboot flash radio Radio.img
fastboot reboot
cd/
cd fastboot
fastboot flash radio RadioU_03.1C.23P.img
fastboot reboot
# fastboot flash radio new_radio.img