Flash OoT3Dhax/supermysterychunkhax via NDS flashcart?

Discussion in '3DS - Flashcards & Custom Firmwares' started by CrispyYoshi, Apr 29, 2016.

  1. CrispyYoshi
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    CrispyYoshi GBAtemp Advanced Maniac

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    Hey guys, I was doing a bit of lurking when I stumbled across an idea just now: What if we could flash the OoT3Dhax/supermysterychunkhax save payloads via an NDS flashcart?

    Is flashing the payload via a DS flashcart possible with the current public knowledge? I think it could work as a nice alternative to Powersaves, or finding someone with a 10.5 or lower 3DS.
     
  2. DrCrygor07

    DrCrygor07 Italian Wario Ware bootleg©

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    You could but with a nds lite or phat
     
  3. CrispyYoshi
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    CrispyYoshi GBAtemp Advanced Maniac

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    Does such a homebrew exist already? I can only recall NDS backup tool, although I'm not sure if that would actually work or not. If it is possible, I wonder why nobody suggests this method?
     
  4. DrCrygor07

    DrCrygor07 Italian Wario Ware bootleg©

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  5. astronautlevel

    astronautlevel But he's a guy

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    @zoogie wrote a quick tutorial on doing oot3dshax using an nds flashcart and a dslite/phat. It's not recommended because you need to saw off part of the cartridge.

    The same thing can be done with SMCH, as the save hardware is the same, but you'd need a save file.
     
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  6. CrispyYoshi
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    CrispyYoshi GBAtemp Advanced Maniac

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    Wow, that's awesome! Do you know why the flashing can't just be done on a 3DS flashcart in DS mode?
     
  7. astronautlevel

    astronautlevel But he's a guy

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  8. Sakitoshi

    Sakitoshi everything is going according the plan...

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    3DS saves are encrypted and you can't modify them as easily as DS saves.
     
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  9. CrispyYoshi
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    CrispyYoshi GBAtemp Advanced Maniac

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  10. astronautlevel

    astronautlevel But he's a guy

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    Irrelevant. You can dump and restore preexisting saves just fine given the hardware on the cart is the same.
     
  11. Sakitoshi

    Sakitoshi everything is going according the plan...

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    yeah, but afaik that dump/restore function uses the encryption keys to do so.
    but you may be right anyway, external save dongles like powersaves exist now that I remember.
     
  12. CrispyYoshi
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    CrispyYoshi GBAtemp Advanced Maniac

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    Powersaves flashes by connecting to Datel's server so they can modify the save for you using private methods.

    However, the tutorial zoogie wrote up seems to work for them, so it apparently really is possible!
     
  13. astronautlevel

    astronautlevel But he's a guy

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    I am right. I've done this process before. The encryption is irrelevant if you make a 1:1 dump of the save data (like with a powersaves).

    Given that it's just restoring data to the cart, it doesn't care about the content of that data. That's why NDS homebrew can restore a hacked save of OOT3DS.
     
  14. MassExplosion213

    MassExplosion213 .

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    Also, for the DS part, you can just use a passme device.
     
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  15. Sakitoshi

    Sakitoshi everything is going according the plan...

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    I though encryption was used to access the save chip itself, seems like I was mistaken.