What a boot ROM dump would mean

Discussion in '3DS - Homebrew Development and Emulators' started by Myria, Jan 12, 2017.

  1. Myria
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    Myria GBAtemp Fan

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    Since there are a lot of misconceptions, I wanted to explain what exactly we would get with a boot ROM dump.

    What a boot ROM dump itself means:
    • It makes SigHax possible (see second list). Even after a boot ROM dump, it will take a few days to a few months before SigHax becomes usable, so these latter points come into play before SigHax.
    • It would mean that decrypting NCCH files, cartridge images, and similar things could be done entirely on a PC, without needing a 3DS tool like Decrypt9.
    • It would also allow decrypting SD card files and NAND dumps, if you have an OTP dump from that system.
    • It would mean that A9LH could be installed without the ctrtransfer step. However, it would not help you dump the OTP. It's basically a 100%-reliable OTPless method.
    • It would mean that most information required to emulate a 3DS would be known.
    • It would make possible almost perfectly impersonating another 3DS, even development systems. (CTRNAND would still need to be re-encrypted, because the NAND CID is used to generate the key.) Because the private key for movable.sed on development systems is known, you could change the serial number to a fake one.

    What SigHax would mean:
    • Nintendo would never be able to block the use of a hard mod to hack a system, no matter what they do in a firmware update. (Currently, it's not possible to directly install A9LH with a hard mod unless you already have an OTP dump, so Nintendo could fix the FIRM downgrade hardmod attack.)
    • Installing SigHax would also not require a 2.1.0 ctrtransfer downgrade, but SigHax would additionally be able to dump the OTP of systems it is installed on without downgrading to 2.1.0.
    • SigHax means that DSiWare attacks could directly install SigHax.
    • SigHax might make it possible to boot from SPI Flash instead of NAND. The usefulness of this is unknown, but DS mode has access to SPI.
     


  2. MadMageKefka

    MadMageKefka GBAtemp Maniac

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    First!

    Nice breakdown. Ty.
     
  3. metroid maniac

    metroid maniac An idiot with an opinion

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    Very good breakdown.

    Might be worth noting that this is full R/W access. It might be possible that all you need to install Sighax is a DS flashcard. We won't know until the bootrom is dumped.
     
  4. Returnofganon

    Returnofganon I pretend like I know what I'm talking about

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    Thanks! This really clears some of the confusing aspects of what the bootrom being dumped means
     
  5. Darksphere92

    Darksphere92 GBAtemp Fan

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    is this the thing that allows users to bypass the 300 title limit? if so any idea when this will be released?
     
  6. daxtsu

    daxtsu GBAtemp Guru

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    No.
     
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  7. Darksphere92

    Darksphere92 GBAtemp Fan

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    is there a thing coming out that allows users to by pass the 300 title limit? maybe i just got this confused by something else.
     
  8. MadMageKefka

    MadMageKefka GBAtemp Maniac

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    This would require a CFW to add / patch that feature. The bootrom exploit could boot said firmware, but by itself it doesn't do anything for the 300 icon limit. This will likely never happen for 2 reasons:
    1) 300 is a fairly large number
    2) You can already install more than 300 titles, the limit on the 3ds is the ICONS, not the titles themselves. They will install, just not show up on the home screen. You can launch those games from FBI.
     
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  9. gamesquest1

    gamesquest1 Nabnut

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    what you mean to say a bootrom dump doesnt just make ps4 emulation possible and complete OS replacements out of nowhere, and 100Gbps wifi speedz........blasphemy
     
  10. Darksphere92

    Darksphere92 GBAtemp Fan

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    welp bye SNES VC injects, you're moving to an emulator.
     
  11. Sketchy1

    Sketchy1 gbatemp's shadiest warez dealer

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    thx for that much-needed clear up. hoping others will see this instead of creating threads asking similar
     
  12. TimX24968B

    TimX24968B "That guy"

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    depending on the titles, SD card space might be the first issue you run into before you hit the 300 title limit. (again, depending on the titles...)
     
  13. Darksphere92

    Darksphere92 GBAtemp Fan

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    ive hit the 300 title limit, but whatever i'll just remove the VC injects, and download the roms of them and an emulator.
     
  14. Jayro

    Jayro MediCat DVD and Mini Windows 10 Developer

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    When the fuck are they going to release these two hacks they announced?
     
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  15. gamesquest1

    gamesquest1 Nabnut

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    they very rarely release the good stuff in any usable form, they just say "this is possible .......this is roughly how we did it" then wait for someone else to replicate it
     
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  16. MadMageKefka

    MadMageKefka GBAtemp Maniac

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    Or if you're a crazy bastard and have a 256 GB micro sd in your 3ds like me! Lol.
     
  17. Darksphere92

    Darksphere92 GBAtemp Fan

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    i have a 128GB Micro sd, only 60GB left, i should be able to make it with 60GB left.
     
  18. metroid maniac

    metroid maniac An idiot with an opinion

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    Who really needs 300 different games at their fingertips simultaneously?
     
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  19. Darksphere92

    Darksphere92 GBAtemp Fan

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    a person who wants to be prepared for the end of the world and wants to still have games to play.
     
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  20. MadMageKefka

    MadMageKefka GBAtemp Maniac

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    Someone who likes to show off to people who dont know about console hacking. I know I do :P
     
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