The title self-explanatory. there isn't a kernel backdoor presented.
Before launching fbi via hblauncher, launch safehax/fasthax. When it is completed succesfully, run fbi.
You need to launch safehax/fasthax again every power cycle if you want to use fbi trough hbLauncher.
But once you have installed the .cia version, you dont need the hb version any more.
For future post and problems, please don't be lazy.
If you haven't post a second post with a description of your problem, I didn't know where you talking about.
Your country flag suggest you are a native English speaker, so you don't have to do any effort to translate like other members do.
Just clarify your problem.