Sorry for getting back to you a bit late. Videocon, I haven't heard of that before. I'm typically a Samsung person, where you use odin, but for this I would guess it would be a little bit of adb work. Honestly I'm not sure where to start, except for getting the stock image for the device of course. A little bit of googling should help you find that. As for the adb commands, I only know a few basics. I would love to help you out with that, but I'm unsure what commands you need. I remember reading a nexus 4.3 update thread on the forums, using adb commands to flash the device with the image. Videocon seems to be a Chinese company, or at least unknown in the USA. I would look at the commands used for the 4.3 nexus update, otherwise I'm clueless. I have no idea who that company is or how they do things. Sorry I can't really help, I tried.
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