Chosen Solution
Two years ago, I tried to install something on my 3DS because I got a game from a friend that wasn’t compatible with my console. I found this guide https://3ds.hacks.guide/ and while following it, my 3DS stopped working. When I try turning it on, the screen stays black, but the blue light flashes once for like a second . I made some researches and it turned out that I apparently bricked my console? I was only 16 when I did this and was just so desperate to play Tomodachi life I had got from my friend, I didn’t really know what I was doing. I’m not really an expert at modding and such things, but I would really be happy if I could get my console to work again. I dindn’t make a back up and I used the SD card that was in the 3DS when I got it which might also not have been the best move? Is there any hope left for my nintendo?
I know I am like a year late but to anyone having this issue: You need to download the latest version of Luma3DS and extract it to the root of your sd card. Make sure the boot.firm is on the root. Replace any files if it asks to.
Try removing everything in the “sd://luma” folder and then getting the latest “arm9loaderhax.bin”. Then boot into the config menu.
Try Holding L, R, A, and Up (on the directional pad, not the circle pad), then performing a system update. This fixed a “soft-bricked” 3DS. If this does not work, you may have to insert the SD card into a computer and perform a specific procedure for “hard-bricked” 3DS consoles. I found this on YouTube long ago. If you wish, you may click here for a video clip I have found, but not yet reviewed due to it being blocked.
Yes go to stchix on YouTube for proper guide