This is a feature that seems to be not mentioned in this site so I will make this guide.
First, prepare the msu1 folder in higan format. Then, zip the files in the folder in either these 2 compression methods: Store (0x00) or Deflate (0x08). Make sure to use zip format but rename the extension to MSU1. Test it with SNES9X standalone and the game should launch. This format isn't compatible with the retroarch version.
Do not distribute this pack to other as it is illegal unless you replace program.rom with patch.bps or possibly patch.ips file and softpatch it with unpatched rom.
README.txt
daedalus.exe
icarus.exe
MercurialMagic.exe