ROM Hack Need help with rebuilding DLC CIA

[mariodon]

Hey guys, I am trying to rebuild some DLC after editing them, but FBI refuses to install it with the error "Invalid NCCH." Here is the procedures I followed to build the CIA.

• Rebuild RomFS with RomFS Builder
• Build NCCH with makerom for each content
  • Here is a sample code I used

  • ./makerom -o 0001 -rsf rsf.yaml -romfs 0001.romfs

  • Here is my rsf.yaml
  • Spoiler: rsf.yaml

    BasicInfo:
    Title : “Taiko_DLC”
    CompanyCode : "00"
    ProductCode : "CTR-M-BT7J-00"
    ContentType : Application # Application / SystemUpdate / Manual / Child / Trial
    Logo : Nintendo # Nintendo / Licensed / Distributed / iQue / iQueForSystem
    
    TitleInfo:
    UniqueId : 0x102f
    Category : Application
    
    Option:
    UseOnSD : true # true if App is to be #installed to SD
    EnableCompress : true # Compresses exefs code
    FreeProductCode : true # Removes limitations on ProductCode
    EnableCrypt : true # Enables encryption for NCCH and CIA
    MediaFootPadding : true # If true CCI files are created with padding
    
    AccessControlInfo:
    ExtSaveDataId: 0x102f # same as UniqueId
    SystemSaveDataId1: 0x00000000 # plaintext exheader
    SystemSaveDataId2: 0x00000000 # plaintext exheader
    OtherUserSaveDataId1: 0x00000 # plaintext exheader
    OtherUserSaveDataId2: 0x00000 # plaintext exheader
    OtherUserSaveDataId3: 0x00000 # plaintext exheader
    UseOtherVariationSaveData : false
    
    SystemControlInfo:
    SaveDataSize: 1M # plaintext exheader
    RemasterVersion: 0 # plaintext exheader
    StackSize: 0x00040000 # plaintext exheader
    JumpId: 0x0004008c00102f00L # plaintext exheader (<full UniqueID>L)
  • I got the following warning when doing so: "[NCCH WARNING] NCCH AES Key could not be loaded, NCCH will not be encrypted"
• Build CIA with makerom

  • ./makerom -o dlc.cia -f cia -i 0000:0000:00000000 -i 0001:0001:00000001 -dlc -major 0 -minor 1

  • I got two warnings here: [CIA WARNING] Common Key could not be loaded, CIA will not be encrypted and [NCCH ERROR] Failed to load ncch aes key

I checked the CIA with ctrtool, which says that the crypto key used for the content is none. Also, the application type displayed in DevMenu is Application instead of DLC. Anyone knows what is going wrong?

 

[shinyquagsire23]

For update repacking , I use this:

makerom -f cxi -target t -rsf gw_workaround.rsf -o update.cxi -exheader exheader.bin -code exefs/code.bin -romfs romfs.bin -icon exefs/icon.icn -banner exefs/banner.bnr -alignwr
wine ../../Exinjector.exe -rom update.cxi -exheader exheader.bin -sd
makerom -f cia -target t -content update.cxi:0:0 -o update.cia

I've never had any luck getting makerom to generate a .cia straight, but generating a .cxi and then injecting the proper exheaders works fine.