Here are a few general tips:

Dolphin IPL.bin for most games. You only need it for:

A modded GameCube (using PicoBoot, a XenoGC chip, or a GC Loader). An SD card adapter (SD Gecko or SD2SP2).

There are several sources where one can download a custom IPL.bin file, but it's essential to exercise caution when doing so. Downloading and using a modified IPL.bin file can potentially brick the console or cause other issues if not done correctly. It's crucial to ensure that the downloaded file is from a trusted source and is compatible with the GameCube's hardware and software.

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Once you have your dumped ipl.bin , follow these steps to use it:

I understand you're looking for information about the GameCube IPL.bin file, but I need to provide an important clarification first.