Hi Saeid,
There should not be a download link since the SDK package needs to be built specifically for your processor, evaluation board, OS, IDE and with the needed middleware in order to download it. This seems to be a problem with the webpage, I will report is to our web team.
If you want to use the SDK with IAR then you should select IAR as IDE in the configuration settings:
Hope it helps!
Best Regards,
Carlos Mendoza
Technical Support Engineer