Are ROM Hacks Signed?

Are ROM Hacks Signed?

Aug 13, 2019 at 7:04 PM
So I want to get Newer Super Mario Bros. DS and Another Super Mario 3D onto a cartridge and i'm wondering if they would be signed as they are a patch of signed ROMs.

» 2 Answers

  • 98otiss
    Aug 13, 2019 at 7:15 PM
    you can use a flashcart which runs both commerical and homebrew games, and tools. i think some people have made bootleg cartridge with rom hacks and sold them but thats just wrong tbh. with a flashcart you can put both games on it.
  • KleinesSinchen
    Aug 13, 2019 at 7:33 PM
    Neither “New Super Mario Bros. (1)” nor “Super Mario 64 DS” are digitally signed. Signatures were introduced with the DSi. All DS games released before the DSi were put on a whitelist.

    The DSi and the 2|3DS (without CFW) check DS software before starting:

    * Does the game have a valid signature?
    * If not: Is it on the whitelist?

    If none is the case: “An error has occurred.”

    Changing anything on a digitally signed file makes the signature invalid. That is the purpose of a signature. Creating valid signatures for the DSi or 3DS requires a private key only Nintendo has.

    Flashcarts bypass this by embedding at least parts of ROMs on the whitelist.
    Better/longer explanation:

    “DS-repros” are usually very cheap flashcarts with their micro-SD slot hidden/closed autobooting a single ROM.