I just directly downgraded Sysnand from 10.7 to 2.1 in an O3DS.

Discussion in '3DS - Flashcards & Custom Firmwares' started by ArmoredGuns1, Apr 4, 2016.

  1. ArmoredGuns1
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    ArmoredGuns1 GBAtemp Regular

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    No problems at all. Saves a ton of time actually, just to let you know it's possible and certainly safe. Oh, I used tinyformat before downgrading though, to be safe.
     
  2. gunner007

    gunner007 GBAtemp Advanced Maniac

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    I don't see how it saves time as don't you need ARM9 to install A9LH? So at your point, you're going to restore 10.7 then downgrade?
     
  3. evandixon

    evandixon PMD Researcher

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    Just because it worked doesn't mean it's safe.
    If anything went wrong, then there'd no way to fix it, since you can't make a nand backup on 10.7.
     
  4. ArmoredGuns1
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    ArmoredGuns1 GBAtemp Regular

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    Updating and downgrading again is way faster than creating 2 Emunand Backups, 1 Sysnand Backup and restore two of them. There's also the option of upgrading through cartridge and then go to 9.2 from there.

    Is there any specific reason about why you'd imagine that it isn't as safe as a normal 9.2 downgrade?
     
  5. gunner007

    gunner007 GBAtemp Advanced Maniac

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    I could see that. Though upgrading via cart would leave you at 9.2.0-4U, which won't work from Ninjihax 1.1/2.x, and neither will browserhax if I'm not mistaken (well technically this can be done if you're willing to create your own payload) You'd also be locked out of MSET at that point as well since you're > 7.x
     
    Last edited by gunner007, Apr 4, 2016
  6. tvall

    tvall GBAtemp Regular

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    i downgraded my 2ds and 2 o3dsxls from 9.2 sysnand to 2.1 before the otp guide was finished. but i also had them hardmodded. so, it works. but if something goes horribly wrong, you need a hardmod to restore. and if you went straight from unmodded 10.7, you dont have a backup and are completely screwed

    for the o3ds models, since i hardmod them all, my usual route is downgrade to 9.2, dump nand, then downgrade sysnand to 2.1 and dump otp, then use the hardmod to flash back 9.2 and set everything up. its faster, but without the hardmod much more risky. i've ended up with 2 frankenfirmwares going to 2.1. i did manage to use an older rxtools to fix and downgrade again. but it could have easily been worse
     
    Last edited by tvall, Apr 4, 2016
  7. evandixon

    evandixon PMD Researcher

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    When driving a car, I've never been in such a wreck that the airbags or seatbelt saved me. Maybe I could do without them?

    There's always a chance something will go wrong. Maybe the downgrade fails and you end up with a 2.x/10.x frankenfirmware, with no usable exploits. Maybe there's a permanent blackscreen.
     
  8. ArmoredGuns1
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    ArmoredGuns1 GBAtemp Regular

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    Well, you can upgrade to 4.x from a cartridge, then launch Rxtools devmode and use Sysupdater to update to a complete 9.2 pack.

    It's the same. You go from an unmodded 10.7 straight to 9.2, with no NAND backup in case something goes wrong. Why isn't it as safe as going directly to 2.1?
     
  9. jefffisher

    jefffisher GBAtemp Maniac

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    i've been doing it that way and recommending it for weeks, i don't know why people are still saying it's unsafe.
     
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  10. gunner007

    gunner007 GBAtemp Advanced Maniac

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    That's my point. You're not saving steps, you're now forced to find a 4.x cartridge, load a different CFW (make a backup - if you care to), and then upgrade back to 9.2. [that's assuming you had either A) a DS cart to install MSET, B) use the browser to install MSET]

    You can usually skip the emuNAND formatted.bin if you're confident in your downgrade. emuNAND restorations after 2.1 can take place via PC since your SD is out (takes maybe 15-30s max on your PC). So really it's just the 1 sysNAND restoration to worry about.

    I'd say for someone who knows what they're doing, go for it. The average user though /shrug.

    Keep in mind, it's nothing about safety, I'm just looking at it from a time perspective for an average user.

    The only safety issue is having nothing to do even with a hard-mod, and the inevitable person who does that on a N3DS which in that case, sad trombone.

    Edit: Is your goal an updated sysNAND? I could see that saving the emuNAND backups and such. That's about it though. That and being O3DS only.
     
    Last edited by gunner007, Apr 4, 2016
  11. tvall

    tvall GBAtemp Regular

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    ive never had a partial downgrade going to 9.2. and if you get a partial there, you can use the same exploits to retry. 2.1 you cant just rerun oot3dhax or browserhax and try again.
     
  12. dark_samus3

    dark_samus3 GBAtemp Addict

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    @ArmoredGuns1 just to get this absolutely straight, the point is to add a layer of protection, I did brick my 3ds by downgrading sysNAND (I have a NAND mod though) so even if it adds time I think everyone is willing to add a little time to ensure their console doesn't get bricked... kthx
     
  13. dankzegriefer

    dankzegriefer GBAtemp Advanced Fan

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    I hope this thread gets people bricked.
     
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  14. Supster131

    Supster131 (づ。◕‿‿◕。)づ *:・゚✧

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    10.7 to 2.1 is a stretch.
    It'd be safer (but still less time consuming compared to using an emuNAND) to downgrade to 9.2 first, make a NAND backup, then downgrade sysNAND to 2.1.
    That's what I've been doing on o3DS's.
     
  15. Ericjwg

    Ericjwg GBAtemp Psycho!

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    it's ok for o3ds though.... not n3ds
     
  16. SmellyPirateMonkey

    SmellyPirateMonkey GBAtemp Fan

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    Better to be safe than sorry
     
  17. driverdis

    driverdis I am Justice

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    you can just use a 4.x game cart to update then use recovery mode to update to 10.7 then do the downgrade again. I have no idea if you can directly update from 2.1 recovery mode though (if it even had one at that time).

    EDIT:
    Source: Myself as I have had a 2.1 partial downgrade before and fixed it this way.
     
  18. ArmoredGuns1
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    ArmoredGuns1 GBAtemp Regular

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    If you can downgrade from 10.7 means you're most probably using Ocarina of Time, so that means that you most probably have a 4.x update cart (which is OoT). Also you can directly update from 2.1 to 10.7 again through system settings (no need to update via cart until a firmware that patches svchax is released).
     
  19. driverdis

    driverdis I am Justice

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    EDIT: I update to 4.5 to hopefully (I have no proof it even does this) repair most of the partial downgrade so I do not have any issues while running a System Update that could result in even further problems.
    I also only use Safe Mode to update from 4.5 to 10.7 as it is hopefully safer than updating from inside a partial firmware.
     
    Last edited by driverdis, Apr 4, 2016