Apply or create
How to use Delta Patcher
Choose the workflow you need, then follow the file labels exactly. The original file expected by a patch matters as much as the patch itself.
Preparation
Before you begin
Download the correct desktop build, extract it, and keep a separate copy of any important file you plan to modify. Obtain the required original file and patch lawfully; DeltaPatcher.net does not supply copyrighted game files.
Original + patch → result
Apply an xdelta patch
Use Apply mode when you already have a .xdelta patch and the exact original file it expects.
Select Original file and choose the unmodified source file required by the patch.
Select XDelta patch and choose the matching .xdelta patch file.
Decide whether to preserve a backup of the original file.
Keep checksum validation enabled unless trusted patch instructions explicitly say otherwise.
Select Apply patch and wait for the operation to finish.
The application updates the selected file according to the patch workflow and settings. A successful operation does not mean that any patch is compatible with any similarly named file.
Source validation
If checksum validation fails
A checksum mismatch usually means that the selected original file differs from the one used when the patch was created. Check the patch author’s requirements for the source release, region, revision, and any previous modifications.
Do not make disabling validation your first fix. Confirm the source file first, because applying a patch to the wrong input can produce an unusable result.
Original + modified → patch
Create an xdelta patch
Use Create mode to record the differences between a clean original and your modified file.
Select Original file and choose the clean, unmodified source.
Select Modified file and choose the version containing your changes.
Choose where the new XDelta patch should be saved.
Optionally add a description, then review the creation options.
Select Create patch and wait for Delta Patcher to write the .xdelta file.
File input
File selection and drag-and-drop
Use the browse controls beside each field, or drag files onto the corresponding file targets. Delta Patcher recognizes .xdelta patch files in its patch field; keep the original and modified inputs in their labeled positions.