I just copied the beta2 version to my 302. Just deleted the old dirs and replaced them with the new versions.
I didn't change the mappings, I don't remember doing that for the first version

, I may be mistaken.
Unfortunately the book only opens the title screen and nothing further. No grayscales, only black and white. I tried it on a couple of books.
But I'm very curious, maybe I'll have better luck with the next version!
Thanks for trying!
Joepie