How to install/run ANY Switch firmware UNOFFICIALLY (WITHOUT burning any fuses)

Discussion in 'Switch - Tutorials' started by rajkosto, Jun 15, 2018.

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  1. Lemon_

    Lemon_ GBAtemp Regular

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    But it should not affect digital games, right?
     
    #21 Jun 15, 2018
  2. friz2000

    friz2000 Member

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    Is this a permanent "downgrade" or does this only allow you to boot old firmware every time you go into RCM?
     
    #22 Jun 15, 2018
  3. aos10

    aos10 ❤ Zelda ❤＼(^o^)／

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    This is...WOW

    this reminds me of the early days of 3DS hacking, especially when A9LH released.

    But this is harder.
     
    Centergaming, buttslaya617z and DKB like this.
    #23 Jun 15, 2018
  4. Rel

    Rel GBAtemp Regular

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    Well done.
     
    #24 Jun 15, 2018
  5. rajkosto
    OP

    rajkosto GBAtemp Advanced Fan

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    You obviously have to launch via hekate each time because otherwise if downgrade: fuses wouldnt let you launch older firmware normally, if upgrade: launching newer firmware would burn fuses
    this is why after you do this procedure the BCT is corrupt like with AutoRCM so the fuses cant get accidentally burned.
     
    friz2000 likes this.
    #25 Jun 15, 2018
  6. DKB

    DKB I'll be watching you sleep tonight.

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    Just wondering, what happens if you did try to launch a old firmware with burned fuses? Would the switch remain black screened or..
     
    #26 Jun 15, 2018
  7. rajkosto
    OP

    rajkosto GBAtemp Advanced Fan

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    It just turns right back off.
     
    DKB likes this.
    #27 Jun 15, 2018
  8. aos10

    aos10 ❤ Zelda ❤＼(^o^)／

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    Question, after downgrading for example from 3.0 to 1.0, then i decide to update again, will that burns new e-fuses?
    What about the systems that came with 3.0, normally those console didn't have any burned e-fuse, so downgrading won't be a problem?
     
    #28 Jun 15, 2018
  9. Memoir

    Memoir Hi, I'm Cynical!

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    In the Murderbox!
    Forgetting the obligatory "Not responsible for bricked systems" in big, bold, red letters.
     
    diegitx likes this.
    #29 Jun 15, 2018
  10. rajkosto
    OP

    rajkosto GBAtemp Advanced Fan

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    http://switchbrew.org/index.php?title=Fuses#Anti-downgrade
    the fuses dont work the way you think they work (which would be super silly.)
     
    lordelan likes this.
    #30 Jun 15, 2018
  11. syntaxyz

    syntaxyz Member

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    Amazing work! Thos weekend I am sure to be playong with this :) :)
     
    #31 Jun 15, 2018
  12. James310

    James310 GBAtemp Advanced Fan

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    So this guide can be used to downgrade to x.x.x without burning the fuses? I guess that can be useful to downgrading to 1.0.0 and installing a cold boot Exploit but for now this thing is way to long and looks like it might brick Systems :rofl2: ,cant wait for a simple automated version in the future
     
    #32 Jun 15, 2018
  13. thaikhoa

    thaikhoa GBAtemp Addict

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    The downgraded fw can boot only via Hekate or I might be wrong.
     
    #33 Jun 15, 2018
  14. scionae

    scionae *clicking circles*

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    This is amazing, but I think we need to understand a little bit better the fuses concept. (at least, in my case)
    Since you can brick from this, I will wait for a simpler release, but in the meantime this will be extremely useful to experienced people!
     
    #34 Jun 15, 2018
  15. DollyWhipDoll

    DollyWhipDoll Royalty & Unbothered. LMFAO!!! ;)

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    Dizzaaam, all that writing has me looking like OP's thumbnail!
    [​IMG]
     
    YigglyPoof, weatMod and scionae like this.
    #35 Jun 15, 2018
  16. willhack

    willhack Advanced Member

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    now we just need someone to create an easy to use program that can do all this for us. also are we able to go online without being banned??
     
    #36 Jun 15, 2018
  17. scionae

    scionae *clicking circles*

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    Don't go online with CFW yet or you might get banned.
     
    DollyWhipDoll and willhack like this.
    #37 Jun 15, 2018
  18. Aldoria

    Aldoria GBAtemp Fan

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    Impressive work, I'll read the full guide when I go back home
     
    #38 Jun 15, 2018
  19. Jayro

    Jayro MediCat USB and Mini Windows 10 Developer

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    I did about 7 or 8 3DS systems the hard method before the easier soundhax and NTRBOOT came out.
     
    silvershadow likes this.
    #39 Jun 15, 2018
  20. wicksand420

    wicksand420 GBAtemp Addict

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    Hey, don't make fun of him, he has boneitis
     
    MushGuy, ByteBite and coned_miro like this.
    #40 Jun 15, 2018
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