ROM Hack [Tutorial] How to Decrypt, Extract & Rebuild 3DS|CIA|CXI Files

[Asia81]

yeah, why not

 

[MasterLel]

Here's the link: http://www.filedropper.com/exefs

 

[Asia81]

Here's the link: http://www.filedropper.com/exefs

Could you use another host?
http://image.noelshack.com/fichiers/2016/05/1454363275-1.png

 

[MasterLel]

http://s000.tinyupload.com/index.php?file_id=07195565127792583794

 

[Asia81]

Edited...

 

[MasterLel]

The game is Animal Crossing New Leaf, and I've included 2 exefs in the archive
It's from a legit cia by the way

 

[Asia81]

I don't see any problems, I can open those 2 files in 3DS Builder without any problems
http://image.noelshack.com/fichiers/2016/05/1454363952-1.png

 

[MasterLel]

Hum weird, it's probably because i'm using vista or my 3ds builder version is outdated... Can you send me your 3ds builder?

 

[Asia81]

Just download the latest version in SciresM's Github

 

[Asia81]

- Tutorial updated
- Included PokemonSMDLP
- PokemonPatchPointerTool code is fixed
- Fixed a typo that prevented the rebuild for OR's update
- Stucture changed for extracted files. For example, DecryptedExeFS will be extract in ExtractedExeFS folder.
- New Links

TODO:
- Add support for Drag&Drop files
- Add support for extract multiple files at same time

 

[Pea2nuts]

It seems to me that it decompresses code.bin whether you press yes or no. Also, what is the point of the rebuild romfs step if you can load the folder in the 3ds builder?

 

[Asia81]

Compressed = named code.bin
Decompressed = name .code.bin with a bigger size

And it's up to you, I prefer rebuild the RomFS before.

 

[Pea2nuts]

Compressed = named code.bin
Decompressed = name .code.bin with a bigger size

And it's up to you, I prefer rebuild the RomFS before.

Whether you pick yes or no the 3ds builder says it is decompressed and requests to compress it. If I don't decompress it and I build a .3ds without compressing it again, it is larger which indicates to me that it was decompressed anyway. I don't understand why it would need compressed again if it was never decompressed? By the way, my problem of being stuck on the loading screen was solved by choosing to not decompress when dumping the rom and then choosing to not compress when building the 3ds file.

 

[MasterLel]

So I've downloaded the last release of 3DS Builder, but it still doesn't work, it won't accept my Exefs, what's wrong with it seriously?

 

[Asia81]

Are you sure to check "Use a Pre-Built ExeFS" and target your bin file? In the good place?
I mean, not open the ExeFS in ExHeader, or something like that...

 

[MasterLel]

Err no the box was not checked, now I can select the exefs without error.... Do I uncheck the checkboxes before pressing "go"?

 

[Asia81]

xD
If you check the box, you need to target a exefs.bin file (named as you want) (so not a folder with inside a exefs.bin file).
If you UNcheck the box, you need to target a folder with inside code.bin, icon.bin and banner.bin

 

[MasterLel]

Ah..... I feel dumb haha
Well, it's working now, so thanks ! By the way, why we don't need a rsf file when we use the 3DS to CIA tool ?

 

[Asia81]

3DS Simple CIA converter?
I know why, but I don't know how to explain it, so...

 

[MasterLel]

Well if you can explain it in French it's ok for me