PSA: Stop Worrying About MCU Bricks

Discussion in '3DS - Flashcards & Custom Firmwares' started by Deck of Noobs, Oct 10, 2017.

  1. Termer

    Termer Offensive Memelord Programmer

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    Those were the days.
     
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  2. froggestspirit

    froggestspirit D/P/Pt Demix Guy

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    Cant you unbrick mcu with a b9s compatable flashcart?
     
  3. BL4Z3D247

    BL4Z3D247 GBAtemp Stoner

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    I'm so high, I don't even know!
    Nope, MCU brick is unrecoverable.
     
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  4. froggestspirit

    froggestspirit D/P/Pt Demix Guy

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    How so from a technical standpoint?
     
  5. MarcusD

    MarcusD ソノちゃん❤\xF0\x9F\x8D\xBC

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    you don't necessarily need B9S, it works as long as the payload's sole purpose is to unbrick the MCU, and doesn't init any hardware other than eMMC and I2C (screeninit *will* fail)

    but this is assuming that MCU_FIRM didn't corrupt so much you can't turn the 3DS on at all... as long as you can boot to the MCU reflasher code and MCU_FIRM's I2C code is intact enough then you can reflash it via software

    ...otherwise have fun with the testpads :P
     
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  6. BL4Z3D247

    BL4Z3D247 GBAtemp Stoner

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    Well that's interesting. The odds still favor the unrecoverable side though, no? Sounds like you'd have to be pretty lucky to have not corrupted the MCU_FIRM enough to pull off the above.