Return to the RX3 editor and use the "Import" function to replace the original texture with your new PNG.
RX3 File Extension: What Is It & How To Open It? - Solvusoft rx3 file editor
Ensure your editor matches the game version. For instance, FIFA 14 RX3 files have a different structure than FIFA 13, necessitating updated tools like FIFA File Explorer . Return to the RX3 editor and use the
While primarily for newer titles (like FIFA 17+ and Mirror's Edge Catalyst), it is the standard for modern Frostbite engine games, though older RX3-based games typically rely on the legacy tools mentioned above. How to Edit an RX3 File rx3 file editor
Use Rx3Master to open the .rx3 file and export the existing texture as a PNG or DDS file.