I think you should Go to your nearest Dishtv service centre & told them about this !
They will definitely Solve your problem !
7 or 8 years ago , I had also same problem then I go to nearest service centre ( Vadodara ) & they solve my problem in Same Day !
The problem is normal , when software of my zenega box Updating Automatically, Electricity is Gone in my Area & Update Stopped !
They are only Update my Box Software & gave me back my STB !