BOOTROM Error! cant boot NAND backup

Discussion in '3DS - Flashcards & Custom Firmwares' started by feloncio, Nov 27, 2016.

  1. feloncio
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    feloncio Newbie

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    Hi!
    i was to do a hardmod to my old 3ds XL,i have a backup of my NAND and a modified nand for downgrade.
    when i write the modified nand restart my 3ds but a blue screen with a bootrom error appear (error code: 00F800FF
    F8F8FFFF FFFFFFFF
    00000000 00000000)

    i tried re write my original NAND, weld the SD card, turn on without hardmod, turn on with hardmod and SD connected to PC but doesn't work... blue screen appear any time.
    any idea about it? i dont know what to do :(

    i hope that any guy can help me and sorry for my bad english!

    PD: when disk manager is making my nand backup, i pressed two times the pad (moving in menu), i think that this action affect my nand backup (or maybe not... idk)
     
  2. 8BitWonder

    8BitWonder Small Homebrew Dev

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    I'm no expert with hardmods, but from looking at this; https://www.3dbrew.org/wiki/Bootloader
    It looks like you maybe have a bad NAND dump, that or the changes you've made are failing sig checks. Maybe try another clean dump? (Hopefully you made multiple)
     
    Last edited by 8BitWonder, Nov 27, 2016
  3. feloncio
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    feloncio Newbie

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    thanks for response, well... i checked the NAND.bin in hex editor and the "NCSD" it's ok.
    i tried writing original nand on patched nand a lot of times but nothing change
    i dont know if i can format the disk from windows and write the original nand from zero, its possible do this? or my brick will be turn in a piece of shit?

    please somebody help meeeee!! haha
     
  4. Majickhat55

    Majickhat55 The Red Woman

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    Check your soldering too, perhaps you bridged a connection somewhere?
     
  5. feloncio
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    feloncio Newbie

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    ill check it now but any idea about format using SD adapter from PC?
     
  6. feloncio
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    feloncio Newbie

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    FAILED!
    i checked all connections, all pines and all its ok... i tried to read the NAND in another notebook with the same result :(
    i put my backup NAND and my new patched NAND but nothing change!!
    any idea?
     
  7. lyk93

    lyk93 Member

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    Show us a picture of your soldering work.

    Sent from my Redmi Note 2 using Tapatalk
     
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  8. Skyshadow101

    Skyshadow101 The Sky Is The Limit!

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    Last edited by Skyshadow101, Nov 28, 2016
  9. Ev1lbl0w

    Ev1lbl0w GBAtemp Regular

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    According to https://www.3dbrew.org/wiki/Bootloader#Error_Codes , "Both the firm0 and firm1 partitions are corrupt". So, this probably indicates a bad NAND dump.

    Can you run SHA-256 or MD5 hashes of all the dumps you have done and confirm they're all the same?
     
  10. swabbo

    swabbo Wot u doin readin dis m8?

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    ^made me giggle^

    U dun goofed me finks
     
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  11. feloncio
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    feloncio Newbie

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    yes, here is!! you can see that all its ok!!
    i think that the problem is not here... what do u think?
    IMG_20161129_154334.jpg

    sorry, i dont have MD5 from my original dump and i have only one backup from original (yes, i'm so stupid!! :( )
    but, in hex. the offset 100 show me the NCSD correctly! so, i dont know what to do
    i'll buy another SD card reader for test but... i think that the problem is not in the SD reader...

    any other idea?
    i dont have raspberry pi for try with this!
     
  12. gamesquest1

    gamesquest1 Nabnut

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    if your original dump was bad then you are screwed, write the original nand backup, then dump it again and check that the hash matches that of the original dump, if it different then there is hope that it's just not writing back correctly, if it matches then your original dump was probably corrupt

    can you check at 0xb130000 and see if there is anything there or if it's just all zeros
     
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  13. TheToaster

    TheToaster Warrior of the Toast

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    And this, my friends, is why we make multiple dumps and check the sizes and hashes of them.
     
    Last edited by TheToaster, Nov 29, 2016
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  14. feloncio
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    feloncio Newbie

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    sure IMG_20161129_205201.jpg

    here is b130000... its ok? or have any problem?
    and, now ill try to write the original NAND and check it with hex.

    thanks guys!! i hope more comments i really apreciate it!!