So I presume it hadn't internally pipped after all, meaning the air hole I put in was not useful for this chick. In effect, me just now breaking the membrane was me doing that for it.
I have seen small microscopic movement within the membrane on close scrutiny through the clear Brinsea Mini Eco Incubator lid, so you never know. I guess if it can breathe, finish absorbing yoke and vessels, then it stands a chance of breaking out of the shell and life. Sadly, it may have been struggling for too long. We will have to wait and see. Thank you so much for every ones help x