I want to Use TataSky Digicomp simple Set top box for my cable line. I do not want to purchase new one.Is there a way to reset TataSky set top box so as I can get all the channels given by my cable operator.
No. Not possible as Tatasky STB uses tuner which supports higher frequencies, while Cable (Digital) uses lower frequency. Besides all chipset used inside for decoding uses logic applied for Satellite reception, while Digital Cable uses different logic, so it will not work on Satellite STB like Tatasky (or any other STB provided by another DTH operator).