ok , im using this guide
https://3ds.guide/ntr-and-cubic-ninja
Section II - Updating
5.-Scan the QR code in the NTR CFW .zip for your region
i did it, appeared a menu ask to install bootNTR as savegame
(A) YES
i pressed A, went to home, then...
6.-On the home menu, press (Y) and (X) at the...