Installing b9s on a potentially already hacked device...

Discussion in '3DS - Flashcards & Custom Firmwares' started by krepandus, Oct 4, 2019.

  1. krepandus
    OP

    krepandus Member

    Newcomer
    1
    Nov 16, 2016
    Australia
    Hi y'all!

    so, a friend from work has a 3DS that he bought used, and as far as he knows, wasn't hacked or anything. I offered to install b9s on it, being a good colleague and all. Come today, I started doing the prep work, only to find that there already is a boot.firm file on the root of the devices SD, as well as a gm9 and a luma folder. There, however is no FBI or Luma app when u turn on the device or, well, anything that could show what has been done to the device. I've also tried to boot into godmode holding start when turning it on and stuff, nothing. He's got the 3DS for 2 years now.

    My question now is, can I safely proceed to, well, potentially 'reinstalling' b9s on it or should I just leave it? And what pathway should I follow with Plailects guide then? Or there is maybe a different way to do things. I just dont wanna brick the poor guy, his kids would end me, lol.

    Thanks in advance!
     
  2. Shadow#1

    Shadow#1 Wii & 3DS Softmod Expert

    Member
    12
    Nov 21, 2005
    United States
    Hold Select on power on what version of Luma3DS?
     
  3. flzmx

    flzmx Advanced Member

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    Nov 12, 2016
    United States
    On B9S, holding Start + Select + X on boot should dump some files to the SD card. If those files exist, then you can probably assume that the 3DS has B9S installed on it.
     
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  4. krepandus
    OP

    krepandus Member

    Newcomer
    1
    Nov 16, 2016
    Australia
    Good thinking. I took a photo, here’s what I got. It most certainly has b9s.
    My question now is where do I go from now? Should I just install the luma app, and fbi so he could use cias or what? The person who sold it to him obviously removed all of the Homebrew apps.

    Btw I hope posting photos is allowed with the forum rules and all.
     

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  5. Shadow#1

    Shadow#1 Wii & 3DS Softmod Expert

    Member
    12
    Nov 21, 2005
    United States
    Then your good to do a system update
     
  6. KleinesSinchen

    KleinesSinchen The Backup Reminder

    Member
    9
    Mar 28, 2018
    Germany
    Are you serious?
    version.



    @krepandus Updating the firmware with Luma v9.0 will result with the well-known error message

    An error has occured:


    Failed to apply 1 FIRM patch(es)

    Press any button to shutdown

    This is not a big deal. Even if you update the official firmware first, you can still replace boot.firm with a newer version. Download the latest Luma verion v10.0.1 and replace boot.firm and boot.3dsx from: https://github.com/AuroraWright/Luma3DS/releases
    After that repeat the finalizing setup to get FBI, GodMode9, etc.
     
    Last edited by KleinesSinchen, Oct 4, 2019
  7. krepandus
    OP

    krepandus Member

    Newcomer
    1
    Nov 16, 2016
    Australia
    I appreciate the feedback, guys. Will get back to you if something goes wrong, but I’m sure it’ll all go smooth.

    Thanks!
     
    KleinesSinchen likes this.
  8. Shadow#1

    Shadow#1 Wii & 3DS Softmod Expert

    Member
    12
    Nov 21, 2005
    United States
    Does not matter as it's not permanent
     
  9. SCOTT0852

    SCOTT0852 Some Dude on the Internet

    Member
    6
    Jan 20, 2018
    United States
    It absolutely does matter, you basically told them to soft-brick their console. You could have at least told them they needed to update their Luma too.
     
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  10. Shadow#1

    Shadow#1 Wii & 3DS Softmod Expert

    Member
    12
    Nov 21, 2005
    United States
    Nope does not matter if he does it before updating or after
     
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  11. KleinesSinchen

    KleinesSinchen The Backup Reminder

    Member
    9
    Mar 28, 2018
    Germany
    From a technical point of view it does not matter, right.

    When it comes to feelings this is different. Just looking at the amount of threads about that “Failed to apply 1 FIRM patch(es)”-message tells me that is does matter. A lot of people were shocked and screamed for help desperately. My first impulse is telling them to use search before screaming for help (in fact, I did this indirectly once).
    On the other hand I can understand the panic. Somebody who is not familiar with 3DS softmods – or in general not tech-savvy – can’t know how easy to solve that specific problem is. To a novice the situation may look devastating: Turning on the 3DS and NOTHING WORKS!!

    Telling someone with an incompatible Luma3DS version to simply update the official firmware without mentioning the known problem is – in my opinion – a really bad advise.
     
  12. Ryccardo

    Ryccardo and his tropane alkaloids

    Member
    14
    Feb 13, 2015
    Italy
    Imola
    By the way, since nobody answered the original question:
    You have to understand that B9S (and .firm programs in general) are just Nintendo-signed* custom kernels, so there's no technical reason for which they can't be replaced;

    * to the extent needed for the bootrom to believe so, compare to Wii's Trucha bug even though it's a little bit more complicated

    however you also need to understand how you're replacing it, because kernels as installed in the kernel partitions are encrypted for your console only: while 3DS-mode kernel installers (GM9 and crippled derivatives like SafeB9SInstaller, OpenFirmInstaller, etc) will work fine (since they ask the console to use the already loaded keys to do the job, even though the program can't read them back out of hardware), DSi-mode ones (firmtool? was it called?) don't have that luxury and have to do it the xorpad way, by comparing the encrypted kernel which is installed with a decrypted one they assume to be installed): that's why it clearly says to "not use it over already installed B9S or a system version it wasn't designed for" - it will generate a completely wrong key by comparing two things that shouldn't be compared!

    Great exercise for using the google... or making a fool out of themselves for not being able to use it ;)
     
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  13. Androidian

    Androidian GBAtemp Regular

    Member
    2
    Sep 15, 2018
    Canada
    That joyconhax April fools was funny
     
  14. BaamAlex

    BaamAlex (*(vu64 *)0x1FF81100)

    Member
    6
    Jul 23, 2018
    Germany
    Or you hold simply the SELECT button to trigger the luma config menu. If it's pop up, b9s is installed.
     
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