- Install
DOSBox for Windows. Don't run it yet.
- Download
SNES Tool and unpack it.
- Create D:\snes. This is to simplify things. (D:\ should not be your Windows partition, just in case. If you only have one partition, try C:\)
- Move SNESTL12.EXE and your ROM you want to patch to D:\snes
- Run DOSBox
- Type
mount D D:\
PRESS ENTER
Type
D:
PRESS ENTER
Type
cd \snes
PRESS ENTER
Type
SNESTL12.EXE
PRESS ENTER
- Select "fix for NTSC" using the arrow keys of your keyboard. PRESS ENTER.
- Select the ROM file from the left window and PRESS ENTER. If you don't see your ROM in the left window, your ROM is either not in the same directory as your SNESTL12.EXE or you started DOXBox before the ROM was moved to the D:\snes folder.
- After a few seconds it should say that it patched the ROM successfully. If it doesn't do anything, this means that your ROM doesn't have any region checks.
Hope that helps!