"What is a legit cia?" (and other noob CIA questions ANSWERED)

Discussion in '3DS - Flashcards & Custom Firmwares' started by cearp, Apr 14, 2015.

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  1. cearp
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    cearp 瓜老外

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    please link to this thread when people (noobs) don't understand something, or think they have a 'great idea' about a 'legit' oot cia, ha.

    What is a CIA?
    Packed content, that can be installed on your 3ds to give the game/app/content.
    A CIA contains the contents, a TMD, and a ticket.
    CIA files are only really for eshop/digital content.
    Although, some people do like to convert 3ds game card dumps to 'cia'/eshop format, because they want them on their home menu etc.

    What is a legit (clean/perfect) CIA?
    A 'legit' CIA means that the signatures are valid.
    A legit cia will work in sysnand, without needing hacks to load it (like gw, cfw etc) -- although we need hacks to INSTALL the cia. :)
    The ticket will have a signature, the TMD will have a signature, I'm sure there are more signatures too in the CIA.
    When you buy a game/download an update, nintendo generates YOU (ONLY YOU) a signature for the file.
    If you edit the file, the signature will not be valid anymore.
    If you remove your console id, so that the cia will install on other people's 3DSs, the signature is not valid.
    If you patch the demo play count so you can remove the 5, 10, 30 play limit from the demo, the signature is not valid.
    If you patch the dlc permissions to set that you have permission for all the dlc, the signature will not be valid.
    If you decrypt the contents and edit the game, make it region free, or translate the game it etc, and then re-encrypt, the signature will not be valid.
    Only nintendo can create these signatures.

    What is a universal/preinstalled legit CIA?
    Preinstalled content is special, the signature generated by nintendo is for every console.
    If I buy a game from eshop, I can make a legit cia, but it will not be 'universal', in sysnand, it would only work with my 3DS.
    For the universal CIAs, they will work on sysnand for everyone. (naturally, region lock still exists)


    My tool FunkyCIA lets you create CIAs from your eshop content.
    You can make 'warez' CIAs, for sharing etc.
    You can make personal legit CIAs, that will work without hacks ONLY on your console.     -- keep in mind at the moment we still cannot use these cias... they just don't install :(
    You can make universal legit cias that work on sysnand for everyone (only from preinstalled content)
     
    Last edited by cearp, Jul 16, 2016
    SirKyogre, Hipeopeo, vinstage and 43 others like this.
    #1 Apr 14, 2015
  2. Loaffy

    Loaffy GBAtemp Regular

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    edit: there we go. Now hopefully the noobs won't misunderstand.
     
    NoNAND and cearp like this.
    #2 Apr 14, 2015
  3. genericuser

    genericuser GBAtemp Regular

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    What is a TMD?
    What is a ticket?
     
    Extrasklep, DarkDante, DavidinCT and 1 other person like this.
    #3 Apr 14, 2015
  4. Suiginou

    Suiginou (null)

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    And now to wait for all the relevant parties to not read this.
     
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    #4 Apr 14, 2015
  5. cearp
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    cearp 瓜老外

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    sure, thanks :) done
    basically:
    tmd = title metadata, information about the contents, the filesnames, size, hash to verify etc
    ticket = the 'permission file', saying you bought the content, also containing the key to decrypt the contents
     
    Reid_Dead, rogerramjet and genericuser like this.
    #5 Apr 14, 2015
  6. genericuser

    genericuser GBAtemp Regular

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    I'm not sure what you mean, but if one is going to write a guide for noobs, surely they should explain the terms used?
     
    #6 Apr 14, 2015
  7. cearp
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    cearp 瓜老外

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    he means noobs won't read this, because they are noobs, they will just ask the questions and or ignore this :)
     
    Suiginou likes this.
    #7 Apr 14, 2015
  8. dandymanz

    dandymanz GBAtemp Regular

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    Can i ask how save games work with legit cias? For example i have a O3DSXL, and i install the legit cias to sysnand. I also have a N3DSXL which i've installed the legit cias as well. Do i get save games files on the O3DSXL SD card that i can copy to the N3DSXL MicroSD and continue playing? Or would i need to use savedatafiler?
     
    #8 Apr 14, 2015
  9. apoptygma

    apoptygma GBAtemp Advanced Fan

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    you missed the most important part! links to the legit Ocarina of Time and Cubic Ninja CIAs!
     
    Hoppy likes this.
    #9 Apr 14, 2015
  10. cearp
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    cearp 瓜老外

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    = "how do saves work with ESHOP CONTENT" :) (nothing special about legit or not here)
    eshop game saves are locked to the console, use savedatafiler if you can :)
     
    dandymanz likes this.
    #10 Apr 14, 2015
  11. itdaboyz

    itdaboyz Member

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    Thanx for the clarification (even if it seems obvious for some points).

    I still have some questions :
    - Is it possible to transfer a save from a Sky3DS game to the CIA version of this game ?
    - CIA game have no headers ? So if I install "legit" CIA, I can play online without risk of getting banned, right ?
     
    #11 Apr 14, 2015
  12. shinyquagsire23

    shinyquagsire23 SALT/Sm4sh Leak Guy

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    With personal legit cias, what is the actual limitation? I'm curious to science this with KARL to see what might be up.
     
    #12 Apr 14, 2015
  13. cearp
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    cearp 瓜老外

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    i sent you a pm a few weeks ago (right?), if you still have it take a look :) i wrote some details i know there -- if you can't find it let me know. sorry if the message was a bit long for you though.
    a personal legit cia just literally does not install on gw, but as soon as i blank the console id, it installs... lol
    if you have time/effort to look into this, i would love for you to do that!
    but yes - gw does not patch everything, like some custom theme cias someone made did not install, but with someone's private cfw with their own patches, the cias did install.
    i would like to think that this is a similar problem...
     
    #13 Apr 14, 2015
  14. capito27

    capito27 GBAtemp Advanced Fan

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    Hey, cearp, i can confirm you that i was able to install my personal CIA of Pokemon Rumble World in PBT-CFW (using BBM), then make an emunand format and update it with Rxmode. The banner apears properly on both sysnand and emunand, and the game starts fine on emunand (from Rxmode)
     
    cearp likes this.
    #14 Apr 14, 2015
  15. Varia

    Varia GBAtemp Fan

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    Guess I'll try asking here too: after installing a legit cia, does it show up on the eShop as if purchased (in the download history)?Like will the game afterwards be tied to my account on my system?
     
    #15 Apr 14, 2015
  16. peter14ji

    peter14ji Member

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    Thank you,cearp.I once asked one of the stupid questions.
     
    #16 Apr 14, 2015
  17. CreativeMan

    CreativeMan GBAtemp Regular

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    If you're talking about the universal clean legit CIA, no, they aren't in the download list BUT if you search and click install, they will install like every already purchased game. I can't confirm it for now as I'm out of eShop (EmuNAND 9.5.0).
     
    #17 Apr 14, 2015
  18. cearp
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    cearp 瓜老外

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    you used '-personal', and they install in PBT? - cooooooooooooooool!
    thank you :)
    now i have a reason to use pbt haha
    (yes it would work on both emu+sys if you create emu after installing on sys)
     
    ThatRedHobo and Loaffy like this.
    #18 Apr 15, 2015
  19. cearp
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    cearp 瓜老外

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    no because it won't be in nintendo's servers on your purchase list history :)
    but if you try to redownload the game from it's eshop page, it will see that you have it installed/or a ticket for it, and able to redownload it
     
    #19 Apr 15, 2015
  20. d0k3

    d0k3 3DS Homebrew Legend

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    Yay, sticky! :bow:
     
    cearp likes this.
    #20 Apr 15, 2015
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