Xdelta

What's xdelta?

All mods in this repo are distributed in xdelta format. https://wikipedia.org/wiki/Xdelta

Xdelta patches only contain the difference between the original file and a modded one, thus for successful patching you are required to obtain:

• Original ISO file (which one exactly should be noted in the mod description)
• xdelta patch file
• xdelta patching utility (desktop or web based)

Important: You cannot combine different xdelta patches, pretty much like you cannot combine different exe files to obtain some new game. The mods must be combined in the source code (if it's even possible), then a new xdelta file must be generated.

Recommended patchers

• Web - https://kotcrab.github.io/xdelta-wasm/
• Web - https://www.romhacking.net/patch/
• Desktop - https://www.romhacking.net/utilities/598/

Patching process

The patching process is trivial:

• Source file is the original game ISO
• Patch file is the xdelta file from the repo
• Output file (if available) is where your new modded iso will be located

Make sure to backup the original ISO file, so you don't lose your game copy in the process.

Troubleshooting

If your modded ISO doesn't launch:

• Make sure you are using proper ISO image (if the patch is for NTSC-U version, your source ISO must be this: http://redump.org/disc/2397/)
• make sure the original game works fine first
• switch to DuckStation
• reset emulator settings