I have found in this link that there is a way to update Gateway on New3DS:
https://psxtools.de/index.php/Thread/74494-GATEWAY-emuNAND-11-6-0-39E-Original-GATEWAY-Card/
But I'm not 100% sure in what mode I need to be for updating.
Is it just Gateway mode that is needed?
https://psxtools.de/index.php/Thread/74494-GATEWAY-emuNAND-11-6-0-39E-Original-GATEWAY-Card/
But I'm not 100% sure in what mode I need to be for updating.
Is it just Gateway mode that is needed?