Not really something anyone can answer. Fire control is really old, and quite possibly not even developed by humans, but by Homo erectus.

Plus, I am noticing this is a big misconception many people hold, things like fire or farming cannot be looked at as something ancient peoples were saving up enough "tech points" to unlock. They didn't get an idea to make fire, they just stumbled upon how to create and control fire, probably accidently at first, but then due to the ability to notice patterns and whatnot, were able to replicate the steps later and voila, they had "mastered" how to control fire.

Hiya, for questions on early man, it would be worth x-posting to our sister sub, /r/AskAnthropology. There are a few anthropologists here, so this sub is fine too, but you'll get more eyes on it over there.