Since updates come from Verizon and Verizon only supports their own equipment, I'm not sure you'd get an OTA since you don't have a VS980. I know there is all sorts of criteria used to match the update to the specific information about the phone...basebands, OS, ESN, and other stuff written into the code. And, do you have Verizon in India?
It is a VS980. We dont have Verizon in India, I am able to use it with a local carrier since this is the factory unlocked international version and can be used for any GSM network anywhere.
I wasn't aware that the VS980 was international. I know it has some similar bands and it is global. You'd have to check with your carrier on the 100% compatibility. However, your carrier would also control the OTA. The best place to start would be there.