Hi there. For a long time, I've tried installing Luma on my 3DS using the ntrboot method with a single 3DS system. It's still not working, so at this point, I'm desperate and I'd be willing to mail over my 3DS (and my flashcart if that's required) so one of you far more versed in 3DS homebrewing than me can finally get it to work. PM me if you're interested.