A9LH -> update sysnand ?

Discussion in '3DS - Flashcards & Custom Firmwares' started by Keylogger, Mar 21, 2016.

  1. Keylogger
    OP

    Keylogger GBAtemp Advanced Maniac

    Member
    1,720
    366
    May 3, 2006
    France
    Hello,

    With A9LH autoboot to 9.0 AureiNAND SYSNAND (no emunand), can I upgrade my sysnand to 10.7 using system settings? Will I loose A9LH?
     
  2. Just Passing By

    Just Passing By GBAtemp Advanced Maniac

    Member
    1,562
    594
    Jan 3, 2016
    United States
    No you won't lose a9lh with Aureinand as Aureinand blocks the update from patching FIRM 0/1.
     
    Keylogger likes this.
  3. Ankry

    Ankry Member

    Newcomer
    34
    4
    Feb 7, 2016
    Barbados
    Is this generally true? It's always safe to update if A9LH and AuReiNand SYSNAND are installed, and the worst thing that can happen is that I have to restore my old sysnand version using Decrypt9?
     
  4. Just Passing By

    Just Passing By GBAtemp Advanced Maniac

    Member
    1,562
    594
    Jan 3, 2016
    United States
    As long as you're using a a9lh compatible cfw with FIRM 0/1 patching, yes it's always safe. I've never heard of a case where it's ever failed. If it does update sysnand and somehow remove a9lh, you'd have to redowngrade as I'm pretty sure the .3dsx for a9lh is for 9.2 and under, but yeah I think all you'd need to do is use D9 to restore an old backup of 9.2 that previously had a9lh.
     
  5. Raylight

    Raylight Paranoid Temper

    Member
    984
    359
    May 10, 2014
    United States
    Who wants to know?
    could nintendo ever find a way around the firm patching?
     
  6. Just Passing By

    Just Passing By GBAtemp Advanced Maniac

    Member
    1,562
    594
    Jan 3, 2016
    United States
    No. The only way that Nintendo could patch it is if they rounded up every single 3ds/2ds/n3ds and made hardware revisions on it, basically they'd have to do something that's a huge waste of time and money and there's no way an owner of their system would give it up.
     
  7. Raylight

    Raylight Paranoid Temper

    Member
    984
    359
    May 10, 2014
    United States
    Who wants to know?
    thats good to know
     
    Just Passing By likes this.
  8. thealgorithm

    thealgorithm GBAtemp Regular

    Member
    182
    51
    Oct 27, 2015
    Bear in mind that if there was that possibility that Firm files can be overwritten by an update (Even though it is protected now, unlikely to happen), you would then not be able to use decrypt9 to write the previous sysnand (as the a9lh would be overwritten).

    It is currently safe to update. (I have updated sysnand to latest 10.7 and no issues)

    Bear in mind that there are circumstances still in which firm files can be overwritten (In particular using the tools mentioned)
     
  9. Just Passing By

    Just Passing By GBAtemp Advanced Maniac

    Member
    1,562
    594
    Jan 3, 2016
    United States
    All you'd have to do is downgrade your system. And while there are circumstances, you'd, legit, have to create the flag yourself for it to actually affect you and if that happens, well that's on you.
     
  10. astronautlevel

    astronautlevel Trying to Find My Way

    Member
    4,028
    4,966
    Jan 26, 2016
    United States
    That Nightly Site™
    It's also possible that Nintendo could exploit their own arm9 kernel during a System Update to overwrite the firm0/1 partitions.
     
    Just Passing By likes this.
  11. A_Random_Guy

    A_Random_Guy Officially That Dev

    Member
    862
    459
    May 22, 2015
    Malaysia
    Smea's closet
    Nintendo's ARM9 kernel exploit.... Kinda weird to exploit their own system
     
  12. Omegadrien

    Omegadrien GBAtemp Advanced Maniac

    Member
    1,713
    530
    Nov 4, 2015
    France
    Pokéland
    I don't think nintendo will doing such a thing, but yes it's technically possible...
     
  13. astronautlevel

    astronautlevel Trying to Find My Way

    Member
    4,028
    4,966
    Jan 26, 2016
    United States
    That Nightly Site™
    I doubt it as well, but I was just pointing out the possibility.

    If that does happen we should create our own homebrew downgrader that downloads the files using 3DNUS then installs everything.