Downgraded my n3ds all the way from 10.2 to 9.2, installed emunand and rxtool with this tutorial : https://gbatemp.net/threads/tutorial-setting-up-9-0-9-2-n3ds-xl-for-rxtools-cfw-including-emunand-coldboot-cia-manager.405589/, then upgrade emunand following first post. Everything seems to be...