Question Urgent - Can't boot on OFW after update

Discussion in 'Switch - Exploits, Custom Firmwares & Soft Mods' started by chardido, Dec 10, 2018.

  1. chardido
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    chardido Member

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    Dec 10, 2018
    Italy
    Hi everyone,

    My switch had, with EmuNand, a 5.0.1 (CFW) and a 6.0.1 (OFW) installed (with the SX OS as payload and CFW).
    I have accidentally updated OFW to the 6.2 version.

    Now, after few days of searching for a solution (no boot in neither), I've deleted EmuNand with SX OS payload.

    After that, I can't boot to the OFW in any way. I've tried different payload (hekate, sxos, ..) but when I select to boot into the firmware, the screen goes black, and the switch restart in RCM (AutoRCM on).

    I've tried to reinstall the firmware through a tutorial found here, but I can't get the keys (how to get switch keys with hactool, i can't post the link) it gave me an error on phase #4 (I've post a reply, I'm waiting for solution right there).

    I've also tried to install Atmosphere, with no luck (it gave me an error with Package2, i think there's a problem with this package since it get stuck when I try to dump it).

    Now, my Switch is unusable and I don't know how to use it.

    Any help? :(
     
  2. Cubuss

    Cubuss GBAtemp Fan

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    Aug 4, 2017
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    Try to see if you can boot in to recovery mode,
     
  3. chardido
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    chardido Member

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    Dec 10, 2018
    Italy
    I can't. Should I remove the AutoRCM option?
     
  4. Cubuss

    Cubuss GBAtemp Fan

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    Not if you used chourdouj in the past to update, it will burn your fuses,
     
  5. chardido
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    chardido Member

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    Dec 10, 2018
    Italy
    I used the original system updater to upload 6.0.1 to the 6.2, and the chourdouj to upload 5.1 to 6.0 (on the EmuNAND, that now is deleted)
     
  6. Cubuss

    Cubuss GBAtemp Fan

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    If you used only chourdouj for emunand then you can disable autorcm i think.
    then try to boot into recovery, if you not able to boot into recovery you will need to recover from a nand backup probally,
     
  7. chardido
    OP

    chardido Member

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    Dec 10, 2018
    Italy
    No, I can't boot into recovery mode, just tried.
    I have only the backup of boot0/1, and nothing else..
     
  8. Cubuss

    Cubuss GBAtemp Fan

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    Aug 4, 2017
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    High Quality Shitposter
     
  9. chardido
    OP

    chardido Member

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    Dec 10, 2018
    Italy
    Yeah, i used this video to enter Recovery, but screen remains black.

    I can only boot in RCM with some payloads..
     
  10. Cubuss

    Cubuss GBAtemp Fan

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    Aug 4, 2017
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    If you got key deriviration failed that means you using old atmosphere,

    Download atmosphere : Here
    Download Payload: Here

    Extract atmosphere zip to your sd card click yes if it ask to overwrite files,
    Then push fusee-primary.bin to your switch when its in rcm mode.
     
  11. chardido
    OP

    chardido Member

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    Dec 10, 2018
    Italy
    It gave me this error:

    Fatal error: Failed to decrypt the Package2 header (master key revision 5)!


    I've also used biskeydump in order to get the keys
     
    Last edited by chardido, Dec 10, 2018
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