I have just changed to version 6.6 of luma (https://github.com/AuroraWright/Luma3DS/releases/download/v6.6/Luma3DSv6.6.7z)
Btw when i said "downgraded" it was not the 3ds version, only the release of luma.
You only need to replace your arm9loaderhax.bin with the one from the release that i...