Well it turns out the problem was a goddam cable. Even tho it was a USB-C cable, the camera apparently didn't like it.
Unfortunately I've destroyed the Uranus-C driver setup in my primary Astroberry MicroSD card, and I have no idea how to reinstall it. Whenever I try the regular update commands, it tells me everything is up to date. I had to use my secondary Astroberry backup system to get it to work, but that doesn't have my flag data.