Required tools.
1. Kbe Manupulator 
2. K2000 media manager
3. Windows Deployment Kit (ADK) for windows 8. Link
4. Windows Automated installation kit for windows 7. Link
5. Bootable ISO (I will use Hiren Boot iso)

First logon to your k2

Make sure you have installed the above required tools. 

Run KBE Manupulator tool as administrator

choose the toolkit as below 
click choose toolkit

Enter the required info (sample in below picture)
click next

Click Add features option 

Go to upload a custom KBE tab

Click browse and choose the Iso 
click Create KBE option

Wait for a few min and you will see k2000 media manager running automatically and adding your iso to K2 boot menu 

once the upload is done you will see as below picture

Now you have successfully uploaded Iso to K2.

Thank you for reading my post. Sorry if there is any mistakes, please comment below if there is any mistake or any step is not clear...