Haven't touched anything RGH related in probably like 5 years, so yeah.
But if you follow the stuff I said on my previous message, you'll get it working.
So it was, either use The Tesseract (what this whole thread is about) and add in the zombies folder that I linked.
Or don't use The Tesseract...
This can be used to fix add_stub.
However, if you're trying to host online, you may encounter other trouble as well.
The Tesseract unfortunately isn't quite perfect for hosting DLC zombies online.
If that's what you're looking...
If you're getting a mod menu to load, you did it right. You crashing problem must be related to something else. Maybe you're trying to load multiple mod menus or something. Or maybe it's some plugin of yours.
And there also is a full download for the whole thing, as can be seen in the OP, but...
Your KV is actually inside your nand.
The KV.bin file you place on your HDD is just something your stealth server would use instead of your actual KV.
There is no removing your KV. You could replace it, but wouldn't recommend it.
Why do you want to remove it?
Youtube-dl, as always, will do the trick.
You'll need e.g. ffmpeg as well though, for muxing.
youtube-dl "https://old.reddit.com/r/Blep/comments/apiyh0/big_reveal_blep/" -f bestvideo+bestaudio
Quite sure the file paths will be normal (just as you described). But maybe you'd want to make sure by just letting your Xbox set up the file system.
Plug in the usb, format it to Xbox (if that's even a thing anymore, not sure it is) and transfer any random small thing to it via the Xbox file...
Just JRPC2 will likely be fine.
In some rare cases some app may only work if you have the old JRPC though. If you encouter problems with an app, maybe try adding the old version as well.
And you should be able to find the JRPC.ini with a quick Google search I'd assume (assuming it indeed doesn't...