Instructions
Download the software package from GBA Temp. (See References.) The files in the package include the software for DS Lazy, the Max Overload application and the "arm7.bin" patch file. Choose the "Desktop" as your save location for easy access.
Import the "Carnival Games" ROM file from your flash memory on the Nintendo DS. The file name should be "Carnival_Games.nds."
Double-click on the "DS Lazy" application icon to open it. Click on the small icon in the upper left corner and select your "Carnival Games" ROM from the list.
Click on the "Unpack" icon to see the list of files stored in the ROM. Find the "arm7.bin" file, right-click and select "Replace." Choose the "arm7.bin" patched file that you downloaded and press "OK."
Click on the "Packer" icon and all the files will pack into the "Carnival Games" ROM file.
Exit out of the "DS Lazy" application and open the "Max Overload" application. Click on the "Load" option and select the new "Carnival Games" ROM file that you just rendered. Click on the "Patch" option, wait a moment for it to complete and then exit out of the application.
Add the ROM file back onto your Nintendo DS. Load the game and the saved files will automatically be created.