page_title: R4 cartridge
hierarchical_section_title: R4 cartridge
caption_attribution_description: English: A picture of the R4 3DS Cart for the Nintendo 3DS.
context_page_description: The R4 is a series of flash cartridges for the Nintendo DS and Nintendo 3DS handheld system. It allows ROMs and homebrew to be booted on the Nintendo DS handheld system from a microSD card. This allows the user to run homebrew applications, to store multiple games on a single memory card, and to play games that have been backed up by the user.
  The R4 flashcard's original developer stopped producing the R4 Card that plays ROMs and homebrew for the Nintendo DS, however, there are a new line of R4 clones that have taken its place, notably the R4 3DS, R4 Gold, R4 DSi and R4 NES, which are used to play ROMs and homebrew from various Nintendo platforms such as the Nintendo 3DS, Nintendo DSi, Nintendo DSi XL and Nintendo Entertainment System. Some of these cartridges can also store a 3DS boot image; a 3DS can in turn be made to boot from the cartridge by way of an undocumented button combination recognized by the system's bootloader. Since the 3DS's secure boot signature validation has been broken, this provides a useful means of installing custom firmware on a 3DS.
context_section_description: The R4 (also known as Revolution for DS) is a series of flash cartridges for the Nintendo DS and Nintendo 3DS handheld system. It allows ROMs and homebrew to be booted on the Nintendo DS handheld system from a microSD card. This allows the user to run homebrew applications, to store multiple games on a single memory card, and to play games that have been backed up by the user.
  The R4 flashcard's original developer stopped producing the R4 Card that plays ROMs and homebrew for the Nintendo DS, however, there are a new line of R4 clones that have taken its place, notably the R4 3DS, R4 Gold, R4 DSi and R4 NES, which are used to play ROMs and homebrew from various Nintendo platforms such as the Nintendo 3DS, Nintendo DSi, Nintendo DSi XL and Nintendo Entertainment System. Some of these cartridges can also store a 3DS boot image; a 3DS can in turn be made to boot from the cartridge by way of an undocumented button combination recognized by the system's bootloader. Since the 3DS's secure boot signature validation has been broken, this provides a useful means of installing custom firmware on a 3DS.
caption: The R4i 3DS, a later clone of the original R4 Card.
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