exploit of Phantasy Star Online Episode I & II, requiring users to find the game and a Broadband Adapter. Both of these are difficult to find because a follow-up has been released (under the name Phantasy Star Online Episode I & II Plus) and thus the original PSO was rarely sold after then, and because the Broadband Adapter was not often carried in stores due to the Nintendo GameCube's very limited selection of online games. As of August 2019, the most common method is to use an Action Replay in conjunction with an SD card adapter inserted into the memory card slot, allowing the user to run homebrew from the SD card, or over Ethernet. Another method involves using a modchip to allow the GameCube to run homebrew from a MiniDVD-R via the disc drive. Another method uses a save game exploit which involves transferring modified game save files to a GameCube memory card that triggers arbitrary code execution when loaded by an official game, allowing custom software to be run from a memory card, SD card, or other media. As the Nintendo GameCube's case does not fit a full-size DVD-R, third party replacement cases are available. Homebrew software for the Nintendo GameCube mainly consist of emulators for other systems, as well as several popular homebrew utilities. Swiss is an “all-in-one homebrew utility”, including a file browser, and the ability to force software to use different video modes that aren't officially supported, such as progressive scan or 16:9 widescreen. The Game Boy Interface is a homebrew software frontend for the Game Boy Player peripheral, and is often used for capturing high-quality footage from Game Boy, Game Boy Color, and Game Boy Advance games. Xbox The Xbox console uses several measures, including cryptographically signed code to obfuscate firmware. The primary method of executing homebrew code required installing a mod chip which could be flashed with a modified Microsoft BIOS. This BIOS allowed the system to boot unsigned executables (XBEs) and control several hardware variables, such as region coding and video mode. With the leak of Microsoft's official development kit (XDK), homebrew coders were able to write replacement Xbox GUIs (known as dashboards), games and applications for the Xbox. A softmod, which uses a commercial game such as 007: Agent Under Fire, Mech Assault, or Splinter Cell, had been created to execute a persistent softmod installer without modification of the hardware. This