PicoBoot is an IPL replacement modchip for the Nintendo Gamecube which, at its core, utilizes a Raspberry Pi Pico.  It allows you to bypass the Gamecube’s bios and boot directly into any homebrew application, such as Swiss, upon powering the console on.

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It allows modified code and programs to run at startup.  This includes programs such as Swiss which serves as a user interface to allow other software to run.  There is a range of software available including emulators for older systems, utilities, and the ability to load ROMs of GameCube titles.

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More information on Picoboot - https://github.com/webhdx/PicoBoot

More information on Swiss - https://github.com/emukidid/swiss-gc

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The most current installation method is used including the 5v power supply with diode to allow for updating the PicoBoot firmware without having to de-solder the chip.  Ask your installer for pictures of their installs - we have seen some messy jobs that needed repair.