Q: NAND backup updating 5.1.0 to 6.0

Discussion in 'Switch - Exploits, Custom Firmwares & Soft Mods' started by lijans, Sep 23, 2018.

  1. lijans
    OP

    lijans Newbie

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    Sep 23, 2018
    Lithuania
    Hi,
    I'm on 5.1.0 and did not perform NAND backup yet.
    Should I do NAND backup before update to 6.0 or do it after update?

    Thanks for advices!
     
  2. Kubas_inko

    Kubas_inko "Something funny goes here."

    Member
    13
    Feb 3, 2017
    Czech Republic
    I gues on earth.
    Well, do you want the possibility to downgrade? DO a backup and install 6.0.0 with choidujournx.
    if you don't care, update the normal way and then backup.
     
  3. lijans
    OP

    lijans Newbie

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    Sep 23, 2018
    Lithuania
    In your opinion is here a point to have downgrade possibility to 5.1? I assume to downgrade to 3.0 or 4.0 would be useful but to 5.1 i'm not sure?

    Theoretically, If I would have 5.1 NAND backup and would try to restore it to updated 6.0 system. What will happen then?
     
  4. Kubas_inko

    Kubas_inko "Something funny goes here."

    Member
    13
    Feb 3, 2017
    Czech Republic
    I gues on earth.
    My personal opinion.: 6.0.0 breaks a lot of stuff and is useful only for online.
    Downgrade to 5.1.0 is possible if you bypass fuse checks to install 6.0.0.
    If you used choidujourNX, which would enable autoRCM, you would go back to 5.1.0.
    If you update normally, it wouldn't boot until you boot thru RCM (to bypass fuse check) or go back to 6.0.0.
     
  5. 210modz

    210modz GBAtemp Regular

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    5
    Aug 11, 2017
    United States
    I wouldn't update to 6.0. Also backing up your nand should be the first thing you do after moddin any system.
     
    LeMageFro likes this.
  6. lijans
    OP

    lijans Newbie

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    Sep 23, 2018
    Lithuania
    If I'll do 5.1 NAND backup and will update to 6.0 with burnt fusses then 5.1 NAND backup will be useless, am I right?
     
  7. Snomannen_kalle

    Snomannen_kalle GBAtemp Regular

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    3
    Sep 2, 2018
    Norway
    That is right. The only way the 5.1.0 NAND won't be useless if you update, is if you do the update through ChoidujourNX without burning your fuses, as Kubas_inko said; that way you can downgrade later on if you feel like it
     
  8. Stoned

    Stoned GBAtemp Addict

    Member
    8
    Mar 26, 2014
    Germany
    Is a Backup from Rawnand.bin Boot0/1 and the System Partitions enought? Or need i a Dump from User too?
     
  9. Kubas_inko

    Kubas_inko "Something funny goes here."

    Member
    13
    Feb 3, 2017
    Czech Republic
    I gues on earth.
    rawnand has everything except boot0/1.
    So, rawnand + boot0/1 = whole NAND.
     
  10. Stoned

    Stoned GBAtemp Addict

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    8
    Mar 26, 2014
    Germany
    Perfekt. Thanks.
     
  11. lijans
    OP

    lijans Newbie

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    Sep 23, 2018
    Lithuania
    What will happen if I'm on 6.0 now (fusses burnt), but has 5.1 NAND backup and will restore it?
     
  12. Draxzelex

    Draxzelex GBAtemp Guru

    Member
    17
    Aug 6, 2017
    United States
    New York City
    Well the console will not start up because the fuse count is higher than the firmware. However, if you can bypass the fuse check by booting into RCM then sending a payload that doubles as a bootloader bypassing the fuse check, you can use the console. But you will lose out on sleep mode since this also checks the fuse count when the console is waking up and cannot be currently patched out.
     
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