so I bought a majoras mask n3ds xl system a few weeks ago from someone on Craigslist. The system came with 9.5 and of course I updated to 10.3 to use my sky3ds online. I made the mistake of not patching one rom because I forgot it was the only one I didn't patch. My 3ds is now banned from going online.. Does anyone know of any place that sells replacement motherboards? I checked eBay and no one has any instock.. If it helps, I am a US based user. I also do not want to purchase a not working system, seeing as you never know if there's any other problems then what's described.