When you launch the game via USB Loader GX or CFG Loader, the USB software dynamically reads the split files as if they were one continuous file. To the Wii, it looks like one game. To Windows, it looks like two files.
In the software, go to the "Drive 1" tab and select your USB drive letter. super smash bros brawl wbfs split
Open USB Loader GX, click on Super Smash Bros. Brawl, go to Settings > Game Load , and ensure the Game IOS is set to 249 or 250 (using d2x cIOS v10/v11). To help you get your game up and running smoothly, tell me: When you launch the game via USB Loader