CC3200: Can not read from uart

For file operation, I download file_operations project into cc3200 via IAR

At first, it can not read messages from uart.

Then, I added InitTerm() function in main();

It worked;

At the end, I want to load file_operations.bin via unifalsh. 

I did it in the following steps:

1. I formatted cc3200 firstly. 

2. Click \mcu.bin and choose  file_operations.bin 

file_operations.bin is located in C:\TI\CC3200SDK_1.3.0\cc3200-sdk\example\file_operations\ewarm\Release\Exe.

3. Click program

4. I took down sop jump cap and pressed restart button

I did it but I can not received any message from uart. So why?