Also there's thisK, i take it back, kinda translated my page
DsiWare downgrade Method: https://github.com/Plailect/Guide/wiki/DSiWare-Downgrade
HardMod Guide: https://gbatemp.net/threads/tutorial-noob-friendly-nand-dumping-2ds-3ds-3ds-xl-n3ds-n3ds-xl.414498/
Hardmod Downgrade: https://github.com/Plailect/Guide/wiki/Hardmod-Downgrade