Please help me unbrick my Switch

Discussion in 'Switch - Exploits, Custom Firmwares & Soft Mods' started by Jeppe, Feb 27, 2019.

  1. Jeppe
    OP

    Jeppe Member

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    Feb 26, 2019
    Denmark
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    I have read all other posts regarding this issue, and wouldn't post unless I was absolutely stuck.


    What is my problem:


    My girlfriend updated my switch from 6.1 (not sure) to 7.0. I tried to restore a NAND backup i have made, but I have the following
    • The script to join my nand parts doesn't work, I merged it with a filejoiner program
    • Both my boot0 and boot1 bin files are 4 MB (isn't that odd?)
    • I can't launch OFW since i have burned fuses (9)
    • I can't launch CFW, I get the nintendo logo, then black screen.
    • I can't install 6.2 or 7.0 with ChoiDuJour
    What i have:

    Full nand backup
    Boot backup
    Biskeys dump
    TSEC dump
    Fuses dump
    Keys.txt generated by Hactool

    All the other dumps you can make with Hetake, except System/User dump

    What i have tried:


    • NAND restore + Boot0 % Boot1
    • Lauch CFW with Atmosphere and Reinx
    • ChoiDuJour
    • Make a 4.x firmware to install
    • Make a 5.x firmware to install
    Everything went well eventually making the 5.x firmware, but it doesn't accept my biskeys for the System step​

    • Make a 6.2 firmware to install
    Can't make, it says NCA header invalid, can't match Encrypted_header_key​

    • Make a 7.0 firmware to install
    Same as above​

    • Enter recovery mode
    Nothing happens. I have tried to both with reboot normal in Hetake and pressing the key combination, launch normal and the key combination, launch atmosphere and use the key kombination.​
    • Used hetake 4.2, 4.6 and 4.8
    • GPTrestore payload

    Does anyone have a suggestion as to what I can try next, or why I cant restore properly?
     
  2. natkoden

    natkoden GBAtemp Maniac

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    Jul 25, 2006
    Argentina
    just use atmosphere 0.8.4
     
  3. Jeppe
    OP

    Jeppe Member

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    Feb 26, 2019
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    I tried, I just get nintendo logo -> black screen :(
     
  4. Kubas_inko

    Kubas_inko "Something funny goes here."

    Member
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    Feb 3, 2017
    Czech Republic
    I gues on earth.
    You have to make it accept the biskeys.
    Also, stop focking downmgrading!!!
     
    Last edited by Kubas_inko, Feb 27, 2019
  5. Napsterae

    Napsterae Member

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    Feb 24, 2019
    Portugal
    are your biskeys correct?
    Did you try the manual downgrade with choi on pc ?

    I had that exact problem, i tried with 5.1 and it worked.
    Delete all files on safe,user and system partitions and copy the ones create by choi.
    Make sure you have the proper keys for 5.1 FW, and check if your biskeys are correct.
     
  6. cholaloula

    cholaloula Advanced Member

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    May 15, 2017
    France
    Also ist your SD fat32 Formattest? Sometimes the black Screen occurs when you're in exfat
     
  7. Jeppe
    OP

    Jeppe Member

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    Feb 26, 2019
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    My biskeys worked untill I had to use them with the system restore part of choi on pc. I used the bisdump.bin to get the keys, but I dont know how to check if they are correct or how to get them otherwise. But with Choi i'm stuck on system codes. I can use the boot0 and boot1 bis keys.

    I was able to make a 5.1 FW with Choi, so I believe i have the correct keys.txt

    — Posts automatically merged - Please don't double post! —

    My card is exFat formatted. Would it help to reformat it?
    I think my nand backup is corrupt, as I cant use the firmware checker on it. It cant find 'contents'
     
  8. natkoden

    natkoden GBAtemp Maniac

    Member
    6
    Jul 25, 2006
    Argentina
    atmosphere 0.8.4 should work, you're just missing files or having problems with the file system

    format it to fat32 and download kosmos to start

    and please stop downgrading
     
  9. Jeppe
    OP

    Jeppe Member

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    Feb 26, 2019
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    Okay, I will try this now :)
     
  10. cholaloula

    cholaloula Advanced Member

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    May 15, 2017
    France
    I had the same problem, formatted in fat32 and everything OK, Hope it's just that : )
    Enjoy your Switch
     
  11. Jeppe
    OP

    Jeppe Member

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    Feb 26, 2019
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    I really hope so, then maybe I will be able to forgive my girlfriend :D
     
  12. Napsterae

    Napsterae Member

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    Feb 24, 2019
    Portugal
    if none of the other suggestions works, go to the sdsetup web site where you can retrieve your biskeys. Upload fuse and tsec bins and get your biskeys.

    But 1st try the other suggestions, they are safer.
     
  13. Jeppe
    OP

    Jeppe Member

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    Feb 26, 2019
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    I formatted and loaded atmosphere, but still black screen :(
     
  14. natkoden

    natkoden GBAtemp Maniac

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    Jul 25, 2006
    Argentina
    kosmos or just atmosphere?
     
  15. Jeppe
    OP

    Jeppe Member

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    Feb 26, 2019
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    Denmark
    First i installed kosmos with a blank fat32 SD. But after nintendo logo it went black (i loaded with fusee-primary.bin), then I tried using sdsetup.com to generate files and boot with that, but same result :/

    I also tried booting with Hetake, using the "CFW" option on both kosmos and sdsetup.
     
  16. gnilwob

    gnilwob GBAtemp Regular

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    Mar 16, 2008
    Hong Kong
    There are 4 pairs of biskey.
    Any of key pair works ?
     
  17. Philliyxx

    Philliyxx GBAtemp Regular

    Member
    4
    Sep 21, 2018
    United States
    • Make a 6.2 firmware to install
    Can't make, it says NCA header invalid, can't match Encrypted_header_key​

    • Make a 7.0 firmware to install
    Same as above​

    • Enter recovery mode
    Nothing happens. I have tried to both with reboot normal in Hetake and pressing the key combination, launch normal and the key combination, launch atmosphere and use the key kombination.​


    Delete encrypted header key in your keys text file and that error should disappear using choidujour to generate 6.2 fw.

    Also I don't think you can enter recovery mode with autoRCM activated.

    Does your BIS keys have tweak and cyrpto keys?
     
    Last edited by Philliyxx, Feb 28, 2019
  18. Jeppe
    OP

    Jeppe Member

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    Feb 26, 2019
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    The first 2 pairs work, but the 02 bis keys don't. And I dont know where I should get others?
     
  19. gnilwob

    gnilwob GBAtemp Regular

    Member
    5
    Mar 16, 2008
    Hong Kong
    I have tried to retrieve biskey using https://files.sshnuke.net/biskeydumpv8.zip on more than 15 switches to perform manual downgrade.
    But I have never seen the problem that the bis key is not valid.

    Can you re-check your bis key or try to dump it again ?

    if the newly dump bis key is still invalid, I am sorry, this is beyond my knowledge.
     
  20. Jeppe
    OP

    Jeppe Member

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    Feb 26, 2019
    Denmark
    Denmark
    I managed to create a 6.1 FW, but I can't make 6.2, but it shouldn't really matter i think.

    I tried without recovery mode too, but then my switch is just all black all the time.

    Yes, I tried both with biskeydump.bin saved to SD card, and QR scan. The first don't divide them, but I know the first half is the teak and latter is crypto.
    When I try to install the 6.1 FW with Choi on PC i get to the 'SYSTEM' step, where i get red text :(

    — Posts automatically merged - Please don't double post! —

    I redumped, but still the same, I can get to 'system' but no further, because my 02 and 03 key don't work :/
     
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