TM4C129ENCPDT: Serial bootloader issue

Were you trying to run the boot loader, or code programmed by the boot loader? If trying to run your boot loader, how did you program your demo serial boot loader into the flash? CCS is complaining that it does not have a symbol loaded that tells it where the main() function starts. Usually that is because no symbols have been loaded. If the flash is programmed with an .out file, the symbols are normally loaded automatically. If the code was programmed from a .bin file with a boot loader, no symbols have been loaded. They can be loaded separately with "Run"->"Load"->"Load Symbols"

Thanks Bob Crosby.
User Ans is very useful it is working,

Now UART is ready for download the firmware, But still i don't no how to use the sflash.exe(serial flash loader) when i run the sflash.exe in windows 8.1 it is not at all running , Automatically getting close.
Please give any note to use serial flash loader.

Thanks and Regards,
Harish

Thanks to Reply,
In this case am trying without a debugger to flash the MCU, Is it possible to flash with LM Flash Programmer, Without a debugger.

Thanks and Regards,
Harish