Decided to install CFW on my Old 3DS XL. Stupidly I forgot to make a backup to restore to when downgrading to 2.1. I tried to update to current 11.4 after installing Luma, and got an error through the system settings. I decided to update via game cartidges, but jumping too high from 2.1 also resulted in an error. So I decided to do babystep upgrades. I used Kid Icarus uprising to get to 3.something, and after it did the reset, Luma decided it didn't like running on 3.something and I boot to a screen that says put the proper firmware.bin in the Luma folder. I found the appropriate bin, and now Luma is saying that file is either corrupted (it's probably not) or encoded and can't boot. Before I go deeper in this rabbit hole, I really need a finger in the right direction. Any idea how to boot Luma on 3.something?