Actually, my original stb(the one that I got with the full package & model was DIGISTB1111 with a rear USB port...I guess) got replaced in Feb, 2015 with this cheap SATELLITEBOX1011R(yes the engineer mentioned that this new one was cheap). The new stb had some sort of videocon card slot(of the size of ATM card) on the back side unlike my prev. original stb.
So, it was continuously blinking & rebooting but sometimes it doesn't blink & at that moment, the little red/blue light isn't actually either red or blue at a time, rather a combination of both at the same time without any blink. I wish if it had some reset button as my prev. stb I could reset it; or any other way that could help... That's why I asked for help.. I've also informed Videocon for the same & now waiting for the engineer.