So, when the downgrade process first came out, it caused a lot of issues and a lot of hard bricks. Mine was unfortunately one of those few batches. This was before the edited sysUpdater that installed native_firm LAST. So, I took a chance and sent it in to Nintendo for a repair. It was under warranty. The process was rather quick, actually. Sent it in, 3 days later it was shipped back out to me. Today, I received it. Was rather surprised to find out the system was fixed. Not only was it fixed, but I booted up to see that Menuhax was still installed. O.o ..and yes, it shipped back with 10.3. I don't know who, but I know someone was going to ask.