Which OC tool/software do you want to use ? Aorus Engine ? Is that a GIGABYTE GPU ? I
f yes, then on the official page the company has actually listed both the revisions, 1.0 and 2.0. They both have the same code : GV-N1070G1 GAMING-8GD, so I don't think a revision number here matters a lot at least when using any OC tool.
But why not use MSI Afterburner OC tool instead? This app works with every GPU model released in recent years, regardless of the brand and model (unless I'm mistaken). I always recommend using MSI AB for overclocking if other tools don't work in rare cases.