You could make an emunand , unlink them , install menuhax and use luma3ds to use your emunand and update it to 11.0, inject FBI into its h&s , install FBI again in emunand and install cias.
Or just follow the damn guide from 9.2 and in the end you'll have a a9lh system with the newest system version and able to install cias with FBI
Don't forget to copy decrypt9 and related stuff from step 1 and then proceed to step 2 https://github.com/Plailect/Guide/wiki/Part-2-(2.1.0-ctrtransfer)
While I know you mean in case of someone confusing schooling establishment from shooting establishment (many of the same letters) I am still going to read that as lockdown (also known as lock in) for a pub
being drunk in school was either because drunk on playing field or could not be arsed with one particular Thursday afternoon so went and had some beers and played some games instead before returning for an ill advised last lesson/period