Possible to downgrade emunand?

Discussion in '3DS - Flashcards & Custom Firmwares' started by MassExplosion213, Aug 24, 2015.

  1. MassExplosion213
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    MassExplosion213 .

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    Would it be possible to downgrade emunand? What if you region changed using old update files?
     


  2. ironmaster49

    ironmaster49 GBAtemp Advanced Fan

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    yeah i think if you just install the cia files on the update folder in bbm or devmenu. and select install every cia i think it should work. might be risky tho. it works for upgrades but not sure about downgrades. you found your 3ds?
     
  3. MassExplosion213
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    MassExplosion213 .

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    Yep. And I'll test later.
     
  4. pakrett

    pakrett GBAtemp Maniac

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    I already tried to downgrade my emuNAND like that and it's not working...

    Maybe with sysUpdater on emuNAND !
    I read that at the end of the github : https://github.com/profi200/sysUpdater
    I will test !
     
  5. dsrules

    dsrules GBAtemp Psycho!

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    most people would want emunand to be as higher as possible
    what are the benefits of downgrading emunand??
     
  6. pakrett

    pakrett GBAtemp Maniac

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    Why not ? If you need to test something...
     
  7. MassExplosion213
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    MassExplosion213 .

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    Would it work if you region change with like, say, 2.0.0 update files?
     
  8. pakrett

    pakrett GBAtemp Maniac

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    I don't know but to region change you need to do more than just install an update pack.
    Why 2.0 ?

    — Posts automatically merged - Please don't double post! —

    I have a 2.0E, I can test to install it on my 9.9E emuNAND if you want.
     
  9. MassExplosion213
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    MassExplosion213 .

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    Testing an exploit patched in 3.0.0. It lets you dump the OTP. And the only other thing you need is SECUREINFO_A for that region.

    EDIT: The SecureInfo_A is only for region change. For info on the exploit, check 3dbrew.
     
    Last edited by MassExplosion213, Aug 24, 2015
    Syphurith and pakrett like this.
  10. MassExplosion213
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    MassExplosion213 .

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    And sure, try it.
     
  11. pakrett

    pakrett GBAtemp Maniac

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    Ok, here we go !
    Are you familiar with region change ?
     
  12. MassExplosion213
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    MassExplosion213 .

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    Yea. I have a european emunand. Of course, american 3ds.
     
  13. pakrett

    pakrett GBAtemp Maniac

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    For info, I will try with cakeMode, and rxMode or reiNAND after that if it does'nt work.

    — Posts automatically merged - Please don't double post! —

    Can you acces to the eur e-shop on your emuNAND ?
    I try to region change to jpn and I can't access it...
     
  14. MassExplosion213
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    MassExplosion213 .

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    No. Public donor file.
     
  15. pakrett

    pakrett GBAtemp Maniac

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    Ahhhh ^^ public a secure info doesn't work ?
     
  16. MassExplosion213
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    MassExplosion213 .

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    Nope.
     
  17. pakrett

    pakrett GBAtemp Maniac

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    Good to know ! Maybe we can share our secure_info between us ?

    — Posts automatically merged - Please don't double post! —

    I currently backup my emunand...
     
  18. MassExplosion213
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    MassExplosion213 .

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    Yea. Pm me yours and I'll pm you my american one when I get home.
     
  19. pakrett

    pakrett GBAtemp Maniac

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    Cool, I'll do it !
    There is a downgrade fonction in sysUpdater 4.1, you just have to press Y instead of A ^^
    Unfortunatly my emuNAND won't boot after that, I'll try with a 4.5 update because maybe the prblm is that the last nativ firm can't load a 2.0 emuNand...
    I will also test with the 2.0 nativ-firm.bin but if it works it will be without sign patch...
     
  20. MassExplosion213
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    MassExplosion213 .

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    Do you have the 2.0 native firm.bin?