Thank you for your answer!
I think I wasn't clear, though. I was on Paranoid Android at the time of writing the question. That's what I refered to as KitKat. And I wanted to go back to stock by restoring my nandroid backup of it. But, I've never seen anyone do it like that on the forums. Everyone used the LG flashtool. So, that's why I asked.
Ended up going to CloudyFlex, and I'm really happy about it!
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