WARNING: I am not responsible for any damage to any devices. Anyway, so head on over to https://github.com/TuxSH/firmtool.git Download the firmtool file Scroll down to "Building a firmware binary from an arm9loaderhax.bin payload " Copy the code "firmtool build test.firm -n 0x23F00000 -e 0 -D arm9loaderhax.bin -A 0x23F00000 -C NDMA" Run that but replace the arm9loaderhax.bin with the payload of your choice It should create a test.firm file. Just rename that to whatever you chose and put it in your luma/payloads Anyway, I'm bad at making quality tutorials, but this should work. It at least worked for me Also, I would also like to point out that I haven't done anything in the development of the firmtool. i just figured the makefile of godmode9 would say something about firm files. All credit goes to TuxSH.