What exactly are those .bin files that the different CFWs require? What do they do technically? They're not included in most downloads, so I assume it's something copyrighted from Nintendo. Also, are they interchangeable between CFWs? I've followed tutorials to set up both reinand and rxtools for example. But the .bin files are different in size. If they are indeed genuine Nintendo-files, how come they're different? Also, are they firmware-related? I now have a 9.2 emunand. If I update to 10.3, does that require new bin files?