Could you write to a DS/3DS cartridge from a 3ds?

Discussion in '3DS - Console, Accessories and Hardware' started by Catonthemat, Oct 29, 2017.

  1. Catonthemat
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    Catonthemat Newbie

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    Oct 29, 2017
    Ireland
    I've been wondering, can you change games on a DS/3DS cartridge through a kernal app?
    Carts, that are not R4 though.
    What I mean by kernal app is something like decrpyt9WIP and Godmode as you launch at startup.
     
    Last edited by Catonthemat, Oct 29, 2017
  2. lordkaos

    lordkaos GBAtemp Advanced Fan

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    no, the cartridges can only be read, not written.
     
  3. SkyQueen

    SkyQueen Arch3DS Developer || B0MBrHax

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    No
     
  4. Lilith Valentine

    Lilith Valentine GBATemp's Succubus™ The Adorable Enby

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    Short answer, No
    Long answer, DS/3DS games use a ROM, which stands for "Read-only memory." They are made to be flashed once and that's it. The only way to change that would be a hardware modification to the chip itself.
     
  5. urherenow

    urherenow GBAtemp Psycho!

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    Carts with built-in saves... you can read/write the save file. That's it. Writing something else in that little space other than that, and the cart will detect it as a corrupt save and delete it.
     
  6. Eix

    Eix H

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    May 27, 2017
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    Lurking in the Void for a bit
    yes
    if you have a custom cart
    no
    if you have anything else

    idk where you would get a custom cart though
     
  7. Ryccardo

    Ryccardo and his tropane alkaloids

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    You can buy official programmable cards at warioworld.com, where else?
    Of course, nobody has written a console-side programmer yet (and probably ever)
     
    Eix likes this.
  8. Roboman

    Roboman GBAtemp Fan

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    While you can't change the game on a cart, you can use it's save flash as a small flash drive of sorts. Just use fbi to browse the save data on the cart and put any file you want on it. Then when you want to retrieve the file you use fbi again. I've used this method to transfer a file between two cfw 3ds on a road trip before.
     
  9. MasterLel

    MasterLel /x69/x73/x73/x6f/x75

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    How much do they cost? I forgot my account password
     
  10. GerbilSoft

    GerbilSoft GBAtemp Addict

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    A few games, including WarioWare DIY, did use a single NAND flash chip instead of ROM + SPI EEPROM. Most of the NAND flash is write-protected, and I'm not sure if there's any way to work around it.
     
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