UNIFLASH: Uniflash image creation using command line

Tool/software:

Hi,

I have been trying to automate the image creation  for my build server. But i am stuck at this error

“ error Error ! Signature file name is empty”

Here are the commands I have used.  Please  have a look this

1. Create a new project

C:\ti\uniflash_7.1.0\dslite.bat --mode cc32xx project new --name Test_Project  --device CC3220SF --mode development 

2. Set MCU binary file which is created by CCS

C:\ti\uniflash_7.1.0\dslite.bat   --mode cc32xx project add_file --name Test_Project --mcu  --file  C:\ProgramData\Jenkins\.jenkins\workspace\Vmedd_Test\repo1\MCU+Image\wifi_mcu_webdav.bin  --overwrite 

3. Set Service Pack
   C:\ti\uniflash_7.1.0\dslite.bat --mode cc32xx     project set_sp --name Test_Project --file    C:\ti\simplelink_cc32xx_sdk_6_10_00_05\tools\cc32xx_tools\servicepack-cc3x20\sp_3.22.0.1_2.7.0.0_2.2.0.7.bin
4. Create image

C:\ti\uniflash_7.1.0\dslite.bat  --mode cc32xx project create_image --name Test_Project  

My device is CC3220SF and i am using uniflash 7.1.0