Blind scan works with Openatv and OpenPli , but i would recommend to use Vti the best with picture quality and the stability of the image, however if you wish to use Openatv ,it is easy to use blindscan after setting up the image which very easy.
you need to go to setting and find set up your password and press set up, then put any number you wish for example : 12345, then press ok, by doing this step, this will be your new password for the image and then restart your device.All other function will be available after setting up you password , but nonetheless i would rather you used and tried VTI and you would notice the huge difference between them. Good luck.