>>31943126I encountered the same problem as you, so I'll spoonfeed.
1. Copy the luma and saltySD files and merge when asked
2. In your 3DS menu, go to luma. If you have the build with "dev" at the end, update to the latest HOURLY.
3. Restart your 3DS after updating luma and check the first 2 options, skip the next 2, and check the next 2 (should game patching and GBA). Save options and turn off your 3DS after returning to the home screen.
3. Go into SD:\luma\code_sections\
Create a folder in \luma named "titles"
4. in SD:\luma\titles create a new folder named the long number that the bin file in code_sections is named (0004000000175E00 or 0004000000164800)
5. Move the bin file into the folder you just created
6. Rename the bin file to "code.bin"
start up your chosen version and the Kukui should say "Welcome to Pokemon Nova Sun/Umbra Moon" after the first textbox.
