I got a japanese 3ds ll and homebrewed it awhile ago, and i recently updated all of the homebrew soft ware (gm9, luma, ect). When i got it, i region swapped it and made sure everything was stable before downloaded UsA cia files for games and everything works fine. The only games i have run into trouble with are pokémon sun/moon + Ultra sun/moon. i downloaded the legit via from h shop, and the update, but when i go to launch the game it loads to a black screen. I have other pokémon games that work completely fine, i only run into trouble with the sun/moon games