I think my new 2ds xl is messed up and I need help

I'll try to make it short
I had Luma3ds on my 2ds
installed majora's mask 3d, it needed an update but before thaat it said that it needed a system update
after the system update it shut down and when I turned it back up it said something like ARM11 an error has occurred
to make it shorter, I looked up a few sites about how to fix it but none worked so I thought that if I format my sd and delete all the files it might 'reset' the system
deleted them, didn't work, despaired a bit and tried to recover the files but it weren't the files I needed
so now I'm left with a 2ds that I can't boot up and an sd card without anything on it
I would just want to know if I can do anything to save the 2ds, I don't even care about the files that were on it

 

gotta say first, I'm an idiot about all this stuff so I might get some things wrong
if I remember right there was something like b9s mentioned when I was installing luma back then
and I didn't know about needing the newest version of luma until it was too late

 

Yeah I geared that you'd say that
As I said, I deleted al the files on the sd card so now it's blank

 

sooooo... bad news and good news
bad news: the files on my old pc were for setting luma up but not the finished stuff/backup
good news: one of the files was some kind of backup for godmode9 so now I have the 2ds on factory settings
still, thanks for the effort