- Install CrystalTile2
- Make a copy of your ROM
- Open CrystalTile2
- Click open and open the copied ROM
- Go to Tools > NDS File System
- Right click on
FSI.CT/arm9.bin
and clickExtract(U)
- Save arm9.bin to this folder
- Run
main.py
- Right click on
FSI.CT/arm9.bin
and clickCompression
- Select
patched/arm9.bin
- Close CrystalTile2, ignoring any warnings about saving progress
- The ROM that you opened is now modified