The SKR 671 does not come with "software" stored on your computer; it runs firmware on the board itself. The standard firmware for this board is or a variant (GRBL 1.1f).
It is possible that:
If you can provide (what it does, where it's from, who made it, what platform it runs on, approximate year, country of origin), I may be able to help reconstruct or locate the story. skr 671 software