I did not invent anything.
I was just referring to other posts I've seen here. Also there were only one issue on the koreader github issues page, when "a" new revision came out of the Libra 2.
https://github.com/koreader/koreader/issues/9218
Of course, that doesn't mean anything, but outside of this thread there are like zero info about the revisions and differences between Libra 2 models.
So there are possibly 4 revisions, okay. What are the differences?
Please try to answer without being an arrogant, thanks.