I am using gateway with latest emunand. Using bootntr cfw 3.4 (release from march) and the new bootntr.cia which supports latest emunand.
https://gbatemp.net/threads/bootntr-11-0-native_firm-support-with-3d-banner.431471/
I have the same folder structure like you. Under plugin and the id of the us version, I have placed the file from the speed fly site. Opening the cheatmenue in-game via x+y.
Thanks for the reply. I am using al9h and luma with this one: https://gbatemp.net/threads/bootntr-11-2-nfirm-support.446183/, I will try your BootNTR and see if that works. It is also possible that I messed up when putting the new cia file in the sd card or someting. I have tried other games and they have all worked but I don't know why this game in particular is giving an error on startup