Quoting this suggested fix from the AuReiNand thread so the info doesn't get lost:
However @Orkna compiled it and said it doesn't work:
Ah, I tried BootCtr9. This one actually has the dirty start.s.
https://github.com/Cpasjuste/CtrBootManager/blob/a9lh/source/arm9/source/bs-start.s
Replace with https://github.com/d0k3/Decrypt9WIP/blob/master/source/abstraction/bs-start.s, change .section .text.start to .section ".init".
However @Orkna compiled it and said it doesn't work:
This gave me the same result. Black screen.