Why so complicated? The only thing which is missing is the boot.3dsx in the root of his sd card.Follow this guide
https://3ds.hacks.guide/updating-b9s
Make sure you are on B9S and no on A9LH before. If that is not the case follow this tutorial first
https://3ds.hacks.guide/a9lh-to-b9s.
If OP got into homebrew once then it can't be a missing boot.3dsx.Why so complicated? The only thing which is missing is the boot.3dsx in the root of his sd card.
...is what he/she wrote...It said to update luma I did update
What do you mean backup and restart? Could you have removed boot.3dsx from your SD card?No when I was in Rosalina I got to Homebrew launcher than Rosalina recommended I back up and restart. After that restart it won't launch.
Are you sure you have CFW? I wouldn't have thought that would work anymore once you have CFW.NVM I can get to Homebrew launcher through steel diver
What do you see if you hold Select on start up?In the past I used the r4i flashcard and it worked but after trying to install cfw again with it that's when things got messed up
What do you mean?I back up and restart
And don't restart the console.After that restart it won't launch