That's not H930 (the European model) but H931 (AT&T model). They are very different. Even if you COULD convert your phone back to H931 (which you can't) it's not going to help you as H931 won't have carrier configs for Indian carriers.
Do you know anybody who has a H930DS?
In any case, study that thread I linked. Maybe H930DS owners shared information in there that you can use.