Finally got around to rooting it.
Followed the instructions below:
https://szehnder.com/tech/root-boox.html
One caveat is the existing edl launchers didn't work but this one did:
https://www.mobileread.com/forums/sh...&postcount=107
@Renate, I noticed your table is missing this one btw. Not sure if you wanna add it or if it has been purposefully left off
https://www.temblast.com/ref/onyxldr.htm