Why can't we use an EmuNAND with the 2.1.0 ctrasnsfer to install A9LH?

Discussion in '3DS - Flashcards & Custom Firmwares' started by Shawnj, Feb 13, 2017.

  1. Shawnj
    OP

    Shawnj Advanced Member

    Newcomer
    83
    11
    Jan 22, 2017
    United States
    Los Angeles
    Being able to do this would make the process much safer, as bricking an EmuNAND by closing the lid on a New 3DS is more of a minor setback than an unrecoverable brick, and I will not hack my N3DS to that extent if it means I have a pretty good chance of bricking it.

    Currently, I am using an Emunand with Luma3DS. I run it by using BossBannerhax and Safe+Fasthax. Getting FBI to work was a pain in the ass, but it works fine, and I have updates blocked (Dualhax DNS) on my sysnand, so I'm fine until a method is made where I can install Luma without a ctrnand transfer.
     
    Last edited by Shawnj, Feb 13, 2017
  2. evandixon

    evandixon PMD Researcher

    Member
    1,689
    810
    May 29, 2009
    United States
    The reason 2.1 is used is because it's the highest firmware that doesn't clear the OTP from memory after the bootrom is done with it. In order to boot emunand, one would have to first boot a higher firmware, which clears the OTP. Emunand loading doesn't use the bootrom, so there's nothing to put it back in memory.
     
  3. LinkSoraZelda

    LinkSoraZelda GBAtemp Advanced Maniac

    Member
    1,980
    627
    Aug 12, 2015
    United States
    Land of the Rising Orange
    If it were possible, don't you think we would have done it ages ago?

    The OTP needed to install arm9loaderhax is locked out (of the entire system, permanently until shutoff) extremely into system boot. It's locked out so early on firmwares newer than 3.0 that by the time you load up the home menu/cfw of the updated sysNAND, before you even get to emuNAND, the region is already locked out.
     
    Last edited by LinkSoraZelda, Feb 13, 2017
    Zidapi and Lilith Valentine like this.
  4. squee666

    squee666 Advanced Tech Pleb

    Member
    1,592
    897
    Sep 17, 2010
    Belfast
    so what you are saying is you basically incapable of not closing your lid
     
  5. GerbilSoft

    GerbilSoft GBAtemp Addict

    Member
    2,109
    2,350
    Mar 8, 2012
    United States
    Also the fact that closing the lid on N3DS 2.1 running in EmuNAND would still brick the system. It's an MCU brick, not a NAND brick.
     
    rphlfjrd, Zidapi, Quantumcat and 9 others like this.
  6. Lilith Valentine

    Lilith Valentine GBATemp's Wolfdog™ ☠️Grunt☠️

    Member
    20,197
    21,574
    Sep 13, 2009
    Antarctica
    Between insane and insecure
    Don't be stupid, problem solved. Why is the lid closing thing even an issue? Once you've gotten to that point, just finish the job. There is no reason to quit it there, you've gotten through the worst of it to get that far
     
    Majickhat55 likes this.
  7. Shawnj
    OP

    Shawnj Advanced Member

    Newcomer
    83
    11
    Jan 22, 2017
    United States
    Los Angeles
    I just don't want to be the idiot who wasted $100 by bricking a N3DS. no offense here, but I think I'd rather wait for sighax or keep this setup because I'll probably forget about not closing the lid. It's not like iOS where there is a recovery mode so you can dick around and still be able to restore to the newest version no matter how much you fuck up.
     
    Last edited by Shawnj, Feb 13, 2017
  8. nechigawara

    nechigawara Citizen of Gamindustri

    Member
    1,181
    390
    Oct 14, 2006
    Thailand
    Planeptune
    After you're restore to 9.2+, you can closing the lid again, you know?
    And, 3DS has recovy mode too. Also, if you have a NAND backup, hardmod can revive your 3DS.
     
    Last edited by nechigawara, Feb 13, 2017
  9. Oishikatta

    Oishikatta GBAtemp Advanced Fan

    Member
    971
    545
    Oct 30, 2014
    United States
    Recovery mode and hardmods can't fix MCU bricks.
     
  10. nechigawara

    nechigawara Citizen of Gamindustri

    Member
    1,181
    390
    Oct 14, 2006
    Thailand
    Planeptune
    I know that, I mean, he mention like 3DS doesn't have a way to revive 3DS.
     
    Last edited by nechigawara, Feb 13, 2017
  11. gamesquest1

    gamesquest1 Nabnut

    Member
    GBAtemp Patron
    gamesquest1 is a Patron of GBAtemp and is helping us stay independent!

    Our Patreon
    14,161
    9,523
    Sep 23, 2013
    well if he doesn't want to risk a mcu brick he could just do the otpless a9lh install, then as long as he makes a nand backup he can always recover if he bricks, but as mentioned when otpless was under debate for removal, the brick chance is super super tiny (like 1/6000)
     
    Quantumcat and nechigawara like this.
  12. Xiphiidae

    Xiphiidae

    Member
    2,085
    1,022
    Sep 13, 2009
    Australia
    You'll be on 2.1.0 for 5-10 minutes. If you can't trust yourself to not close the lid during that time, then perhaps you shouldn't bother dealing with CFW at all.
     
    Zidapi, wormdood, XRaTiX and 8 others like this.
  13. Geezerdorf

    Geezerdorf Advanced Member

    Newcomer
    55
    22
    Apr 11, 2016
    Mexico
    ヴェラクルス、メキシコ, AKA Hell.
    MCU Bricks are actually different from the common Nand brick. These send a message to the machine to "hibernate", but they didn't set a way to revert it for the N3ds hardware (it's more like they didn't expected THOSE systems to ever run that sys version...ever!). So once you put your N3DS or 2ds on standby in that specific scenario (2ds on firmwares 4 or less), you dun' goofed.

    The procedure is stable, yes, but it isn't foolproof. A lot of people commited the mistake of closing their N3ds lid "just by accident" or "due to be rushed" too much; no wonder why they opted for a "less risky" method afterwards.

    I did used this method when i installed a9lh for my personal N3DS. It's kinda useful to have your OTP and other important info, just in case.

    Is it really safe? Well, if you follow the procedure and don't deviate/distract yourself with something along the road, it IS safe.
    Should you ever feel the need to close the lid of the system on 2.1...you're better off shutting the system off if you plan to do a prolongued pause, which in that specific scenario, is much much safer (i did that)

    Addendum: Should you use it? Depends on the situation and if you don't have any actual choice to do the downgrade. Again, it IS safe, but only if you don't deviate/distract at all doing it so.
     
    Last edited by Geezerdorf, Feb 13, 2017
    nechigawara likes this.
  14. nechigawara

    nechigawara Citizen of Gamindustri

    Member
    1,181
    390
    Oct 14, 2006
    Thailand
    Planeptune
     
  15. thekarter104

    thekarter104 GBAtemp Maniac

    Member
    1,248
    375
    Mar 28, 2013
    United States
    We are lucky we can go that far down with the firmware.
    Take PSP, PS3, you can't downgrade below the firmware than the firmware you got when you bought the PSP, PS3.
     
  16. Platinum Lucario

    Platinum Lucario GBAtemp Advanced Fan

    Member
    520
    234
    May 17, 2014
    Australia
    Warrnambool, Victoria, Australia
    Just as long as you're downgrading from 11.2 and earlier, your NAND will be fine. 11.3 introduces some NATIVE_FIRM version checks and Home Menu checks. The 3DS isn't like the PS3 in where the firmware version is hardcoded onto the CPU.

    As long as you're downgrading from 11.2 or earlier, you should be fine. And you'll only be on the 2.1 firmware for a short time while following the 3ds.guide, just as long as you don't press the power button or close the New 3DS lid, you won't brick.
     
  17. Jayro

    Jayro MediCat USB and Mini Windows 10 Developer

    Member
    GBAtemp Patron
    Jayro is a Patron of GBAtemp and is helping us stay independent!

    Our Patreon
    5,218
    2,852
    Jul 23, 2012
    United States
    Octo Canyon
    Not even that long. Once booting into 2.1, you open the browser, type in the url, and press Select. Then you reboot into Hourglass9... All those steps take maybe 1 to 2 minutes, tops.
     
  18. thekarter104

    thekarter104 GBAtemp Maniac

    Member
    1,248
    375
    Mar 28, 2013
    United States
    With the 5-10 mins extra, you check if everything is right on the SD Card. I was more than 10 minutes on 2.1 because I had to switch computers.
     
  19. steocullen91

    steocullen91 GBAtemp Regular

    Member
    102
    10
    Jan 29, 2017
    Dublin
    I was only on 2.1 for like 2 minutes and during all the preparation up to that time and during it I'll admit I was nervous and kept thinking don't close the lid, DON'T CLOSE THE LID, DON'T UPDATE FROM 2.1 ON A N3DS!

    I read over the guide at least 20 times even before I got the DS lol.
     
    XRaTiX and Jayro like this.
  20. Jayro

    Jayro MediCat USB and Mini Windows 10 Developer

    Member
    GBAtemp Patron
    Jayro is a Patron of GBAtemp and is helping us stay independent!

    Our Patreon
    5,218
    2,852
    Jul 23, 2012
    United States
    Octo Canyon
    I just never let the N3DS leave my left hand. I hold it in a certain way near the hinge, so it's impossible to close.
     
    Quantumcat and Lilith Valentine like this.