LTE Support for Lumia 925 in India

I don't think so unless Microsoft give an update for unlocking. You could try flashing to UAE rom to enable lte. And do bavup before you actually perform the flashing
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Charlie
 
Now since there are many LTE service providers in India, I hope Microsoft could comment something on this.
 
But i guess you wont be able to get the benefits of LTE in India as the bands supported by Lumia devices are not supported by Indian telecom operators yet.