ROM Hack save backup and inject (need help)

[leerpsp]

iv looked all over the place can not seem to find it on my own, I need help on what i need to backup my saves on my Nintendo Switch and also inject them back.

 

[SleepyPrince]

EdiZon or CheckPointhttps://gbatemp.net/threads/edizon-a-save-editor-and-manager-for-horizon.506167/

 

[leerpsp]

EdiZon or CheckPoint

thank you

 

[leerpsp]

what sucks about modding my splatoon 2 save is it says you need to be online to buy anything and since i'm playing a backup there is no way i can get online with it, unless I would like a ban.