Sun DTH, faced a major problem after the INSTAT transponder failure. They moved to a new satellite METSAT. But they need to do upgrades in STB of the customers for completely switching over to the new satellite.
They have put up the following notice in their website.
Your DTH service equipment needs to be upgraded for uninterrupted service. Sun Direct is sending its technicians to do this for you.
We request you to please co-operate with them to help us provide you better service.
Please note that this service is free of charge.
Thank you for your co-operation
Sun Direct TV Pvt Ltd
One of our readers has posted a link to do the upgrade manually: Sun DTH SAT Change
I have not tried this. It may or may not work!