To answer "2- " of your question(s), as you've already reviewed an answer for "1-" .
That is the current state of your devices Android/OOS security patch.
FK is functioning the same on OOS 9.0.6 as it previously did with 9.0.5.
I also already answered this question several posts above, pls in the future use the forums search before posting.
And how long did you wait for it to attempt the initial bootup? As it could take anywhere from 10~15 minutes or longer.
What custom ROM are you coming from?
Read my previous response 4 comments above, as this kernel is no longer under active development.
In the future use the forums search, or read the last dozen or so pages of a thread, before posting.