Different Methods for Patching
There are several methods for creating patches, but they all use one of two approaches. One approach keeps files from the original release or previous patches, but adds a pointer to new content. The other approach is to transform the content in the original build using a binary patch.
Note: You can build patches in Unreal Engine 4 (UE4) for many different platforms. However, we do not support distribution of patches for your project. Each platform has their own system for uploading patch files, and for distributing those patch files to users. For information on these platform-specific distribution systems, see the documentation for that platform's Software Development Kit (SDK).