FBX uploaded the json file, so I was able to import and modify the ones I wanted to.
And then, of course, after flashing the bin to the OSSC and AFTER making a few more tweaks to some of the profiles (color balancing), I realized I forgot to include a PS1 profile. There is of course 1 slot left “empty” from the FBX file, which I can use for PS1. While it’s a cool function, it’s a bit of a double-edged sword. In order to add PS1, I would have to make all the changes to the json that I had made at the OSSC, and then add the PS1 profile; or, use the last empty slot, and create the profile at the OSSC, but is there a way to modify the profile name at the OSSC?