Assumption of Moses is a banned book.
Quote: Another 'Assumption of Moses'
Another fragmentary Assumption of Moses is preserved in the Midrash Bereshit Rabbati of Rabbi Moses ha-Darshan (eleventh century), in a manuscript kept in the library of the Jewish congregation in Prague. The following is a synopsis of its contents:
As the time for Moses' death approached, God permitted him to ascend into heaven,...
Can you stop trying to teach, please? Lol. I'm very well aware of the matter, and there are several fragments, but the actual Assumption of Moses is lost. We simply know of its existence through quotes from the early fathers, and through them trace it as being the source behind which Jude based the story.
Your assertion that the canonical Book of Jude has has been "corrupted" is a fallacy, as is your assertion that it was "Gnostic." You can post from now till the Lord's return and you'll never provide any support for the claim because no support exists.