So, I decided to homebrew my 3DS and it was going pretty good until now, I have pressed save and waited and waited for a very long time but doesnt save :
Install R4 3DS B9S www.r4i-sdhc.com on NEW 3DS Console - YouTube
I hacked to my 3ds a while ago. But after a while I need an extra ds card so I deleted all the data from the one I used for my 3ds.
3DS Compatible DS R4 Flash Cartridge for Homebrew or Roms - Etsy
3DS Homebrew Archives - Page 2 of 14 - Hackinformer
Programator R4i B9S Luna dla Nintendo 3DS - 7049164784 - oficjalne archiwum Allegro
A9LH (ARM9LOADERHAX) TO B9S (BOOT9STRAP) GUIDE : UPDATED 2020 VERSION - YouTube
Buy R4i-B9S Flash Card with USB TF Card Reader for Playing 3DS Games, Support Boot9strap & Luma 3DS CFW at affordable prices — free shipping, real reviews with photos — Joom
Updating B9S - 3DS Hacks Guide
MultiUpdater by LiquidFenrir - B9S Payload and Luma3DS Updater - Hackinformer