Question BOOT0 checksum mismatch

Discussion in 'Switch - Exploits, Custom Firmwares & Soft Mods' started by yacepi15, Aug 28, 2018.

  1. yacepi15
    OP

    yacepi15 GBAtemp Maniac

    Member
    5
    Aug 15, 2015
    Germany
    Hello,

    I've made a clean NAND backup of my Switch including Boot0/Boot1 partitions and i'm going to restore it. Just in case, i've made another one of the console now, and the boot0 checksum is different.

    - Both backups are from the same OS version.
    - I NEVER did autoRCM.
    - Boot1 is the same in both backups.

    Is that normal that BOOT0 changed or one of the backups is corrupt?
     
    linuxaresisagaysob likes this.
  2. RyuSeisuke1992

    RyuSeisuke1992 GBAtemp Regular

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    Mar 24, 2018
    Germany
    This is also the case with me. hekate cannot restore the backups properly. Now you have to live with the fact that the AutoRCM can never be deactivated.
     
  3. iCEQB

    iCEQB GBAtemp Advanced Fan

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    Nov 2, 2013
    United States
    I'm pretty sure with a donor boot0 and your keys, you can get a proper recreation of your original boot0.
    But don't ask me how lol
     
  4. Falo

    Falo GBAtemp Fan

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    Jul 22, 2012
    Germany
    http://switchbrew.org/index.php/Flash_Filesystem

    BOOT0 contains BCT, Keyblobs, package1 and other data, the other data is rewritten on every reboot, a wrong checksum doesn't mean that your BOOT0 is corrupted.
    BOOT1 is a copy of the current firmware's safemode package1
     
    SrTommy, mariogamer and Lacius like this.
  5. RyuSeisuke1992

    RyuSeisuke1992 GBAtemp Regular

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    Mar 24, 2018
    Germany
    @Falo
    you've successfully restored boot0. SX OS AutoRCM has damaged my boot0 forever. I can't uninstall the AutoRCM. Luckily I made a backup of boot0 and 1. However, I tried to restore boot0 with hekate. Nothing's working.
     
  6. Falo

    Falo GBAtemp Fan

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    Jul 22, 2012
    Germany
    I used hekate to install AutoRCM and i can uninstall it without any problem.
    But i never restored BOOT0, so maybe hekate can't fully restore it?
     
  7. Ericthegreat

    Ericthegreat Not New Member

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    9
    Nov 8, 2008
    United States
    Vana'diel
    I think
    This is true you can use someone else boot0/1 but you need your system partition which should be there is youvdid a full nand dump, but talk to someone who knows what they're saying.
     
  8. RyuSeisuke1992

    RyuSeisuke1992 GBAtemp Regular

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    Mar 24, 2018
    Germany
    I tried three times, but all my attempts failed. My switch now only boots into the RCM.
     
  9. Lacius

    Lacius GBAtemp Guru

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    May 11, 2008
    United States
    Did you use briccmii to remove AutoRCM? It's better at removing most, if not all, forms of AutoRCM. You should backup your BOOT0 and BOOT1 before using it.
     
  10. minooch_e

    minooch_e Member

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    Apr 28, 2017
    United States
    Pretty sure you need to remove AutoRCM the same way you installed it, as different methods corrupt it differently
     
  11. Lacius

    Lacius GBAtemp Guru

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    May 11, 2008
    United States
    That's generally true, but briccmii works well with multiple methods.
     
  12. LiamMCW

    LiamMCW Member

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    Jul 10, 2018
    United States
    Updating turns off autoRCM, so you can do it if you get desperate.
     
  13. Mr. Wizard

    Mr. Wizard Ending the spread of bullshit one thread at a time

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    7
    Mar 20, 2015
    Canada
    E8 lattice
    +1 briccmii, saved my life.
     
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