Essentially, while creating a scene, I’ve accidentally set the particle amount to well near a million or so 
, this of course led to an instant bug then crash with the amount it was generating (1 million objects with certain amount of verticies/tris)
And so as per usual, I’ve tried looking in my autosave files/last session and to no avail, I couldn’t open the file and will just lead to an instant close upon doing so.
How can I recover or it revert it some time back?