but if you use the a9lh installer by them, it does not supporrt a9lh.binthings have kind of changed since they have released an arm9loaderhax.bin compatible with standard setups. though I haven't gotten it to work with Luma3DS chain loading(only when it's "arm9loaderhax.bin"). haven't tested BootCTR9.
(also this single buffering stuff looks weird)