Open your downloaded rePatch folder. Copy all the files inside the rePatch/[TitleID]/ folder and paste them directly into your Vita3K ux0/app/[TitleID]/ folder.
On a physical PS Vita, the plugin allows the system to prioritize decrypted files in a specific folder ( ux0:rePatch/ ) over the encrypted original game files. Because Vita3K installs games in a decrypted format by default, it does not require the .skprx plugin file used by real hardware. Instead, you "repatch" games by manually merging modded files into the existing game installation. How to Use rePatch Files with Vita3K repatch vita3k
Applying "rePatch" to the Vita3K emulator is the primary way to enjoy fan-made English translations, high-definition textures, and gameplay mods. While rePatch was originally a kernel plugin for physical PS Vita hardware, its function in Vita3K is handled through simple file replacement within the emulator's directory structure. Understanding rePatch in Vita3K Open your downloaded rePatch folder
Find the folder matching your game's Title ID within the app directory. Because Vita3K installs games in a decrypted format