I thought they were mainly a "non-fta" box if you know what I mean but if it has Coolsat in it, then it might work
Here is a true way to verify if blind scan works
-select a different satellite than where you are. So if you are on G19 select a satellite like AMC2, Horizon 2, Horizon 1, just another satellite but dont move the dish
-blind scan that "other" satellite. If the blind scan picks up the transponders then the blind scan works
I've seen other boxes where you can delete all TP's then "blind scan" and it plugs those same TP's back in. Using a different satellite forces it to find the info