ROM Hack How to patch eShop games to be region free?

[kinder_bueno]

Hi, I've dumped my eShop games using FunkyCIA and I would like to make them region free. I know that I have to change icon.bin and I can do this even using decrypted CIA, but after such change I need also to generate proper signature for that NCHH. How should I do that?

 

[Ryccardo]

I've had success with using Decrypt9's "Cia decryptor - full", decompressing with PackHack, editing, creating a .3ds with PackHack, and finishing with Simple 3DS to CIA 4.3 (iirc) -- a fakesigning sufficient to install and run under CFW is automatically handled, and of course you can't get a legit cia (for everyone or yourself) out of this!

 

[kinder_bueno]

@Ryccardo thank you for the response! I am aware of this method but using 3dsbuilder included in PackHack you will lose manual for the original game which is my aim here - I want manual to also be included in generated 3ds/cia.

 

[Ryccardo]

3dstool and makerom can create cias (wihout going through .3ds, either!) much more flexibly, but they're an absolute nghtmare to use...

Check out the 3dbrew page for makerom, and my topic https://gbatemp.net/threads/how-do-you-recompile-a-cia-of-a-system-data-archive.413366/ culd also be usefule (even though I was working on a completely different kind of cia, it was another problematic one for PackHack!)

Good luck!!

 

[kinder_bueno]

@Ryccardo I have downloaded ctrtool, 3dstool and makerom - I've found some documentation on 3dbrew but I can't find good docs for ctrtool and 3dstool, and --help command is not really helpful since it doesn't even list every possible commands, e. g --content and possible set of parameters for it. I cannot make anything of it

@EDIT

@Ryccardo Thanks! I did it just as it was described in the link you've given to me! Below my input on keeping manual in the CIA:

makerom -f cia -o zelda-seasons2.cia -content game.0000.00000000:0:0x00 -content game.0001.00000001:1:0x01 -major 0 -minor 0

game.0000.00000000:0:0x00 - cxi containg the game, banner, icon, etc
game.0001.00000001:1:0x01 - extracted manual