ROM Hack [Tutorial] How to Rebuild a Custom Update for Pokémon XY/ORAS

[Asia81]

With this tutorial, you will be able to rebuild a custom update for Pokemon X/Y, OmegaRuby/AlphaSapphire.

If you decrypt and use the latest update as a base, you will also can go online, such as GTS

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Summary:​

-Prerequisites
- Decrypt your Update
- Edit your Update
- Rebuild your Update​

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Prerequisites​

Download and install my PackHack:
http://pastebin.com/A1s8cmsD

Install the new SetupUS.exe of HackingToolkit3DS as a common tool:
​

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Decrypt your Update​

First, you need to decrypt your Update.cia with Decrypt9WIP.
For more infos, and the tutorial, go here:
https://gbatemp.net/threads/tutorial-how-to-decrypt-extract-and-rebuild-a-cia.388677/

Once your update is extracted, your folder should be something like this:

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Edit your Update​

Part 1 - Prepare your Custom RomFS:

For now, you can just edit/inject GARC files and the sound folder.
Don't touch other files/folders (GARC are files without extension).

First Way : Edit a GARC already in the update

Extract your GARC with GARC Tool.
Edit what you want.
Rebuild the GARC with GARC Tool.

You can also take a GARC from your full game, and put it in the same path, by deleting the same/old GARC from your update.

Second Way: Inject a GARC which is not in the Update
For this example, I will use the AlphaSapphire's Title Banner (GARC a/1/5/2).

For add a new GARC in your update, you need to know the A path.
And make a new folder in the romfs folder of your update.

Now, you need to rename this new folder by the A letter and the first number of the GARC path.
In my case, I need to name the folder a1. In this a1 folder, I will make another folder, name it 5, and in this 5 folder, I will put my GARC "2".

Look, you will understand:

You can also see it in video, if you always don't understand.
I'm sure you'll can understand with it:


Once your custom A folder and your GARC are ready, you need to edit the .code.bin file to tell him that you want to load the GARC from the update, and not the game.

You need a decompressed code.bin file!

Open HackingToolkit3DS, write pppt.
Pokemon Patch Pointer Tool is now open.

With it, target and open the decompressed code.bin from your update.
In the tool, write the path after the A:

Do the same for all other GARC you injected.

And press the Patch button :

​

Third Way: Inject a Sound folder
For this, you need first to extract your full game.

Take the following folders from your full game:

sound
sounddebug

And replace sound by sons:

sound become sons
sounddebug become sonsdebug

Now put your both folder from your full game and renamed, in the romfs of your update.
Open .code.bin (Decompressed, I recall) in an hexadecimal editor. HxD is highly recommended.

Search and Replace the following string:

72 6F 6D 3A 2F 73 6F 75 6E 64 2F 73 61 6E 67 6F 5F 73 6F 75 6E 64 2E 62 63 73 61 72

By:

72 6F 6D 32 3A 2F 73 6F 6E 73 2F 73 61 6E 67 6F 5F 73 6F 75 6E 64 2E 62 63 73 61 72

Part 2 - Rebuild your Custom RomFS:

Open HackingToolkit3DS, write RFSB.
RomFS Builder is now open.
With it, open your ExtractedRomFS folder (in PackHack).
Click GO. Wait and save it named CustomRomFS.bin.
Done !

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Rebuild the Update​

Open HackingToolkit3DS, write ppb.
Write if you want rebuild your update for X/Y, OmegaRuby/AlphaSapphire (x/y/or/as)

Wait until the full rebuild, now you should have a new Patch.CIA in this folder.

Try to install it, and run the game.
See if it's working.

Enjoy.

This is a Proof Of Working showing the installation of CIAs created in the Part 1 of my video, you will can see the installation, then the in-game banner as expected:

Spoiler: Credits and Thanks To

Credits:
CTRTool : Neimod
ctrulib : Smealum
Makerom : 3dsguy
3DS Multi Decryptor (CtrKeyGen) : Relys
Padxorer : xerpi
RomFS Builder : SciresM
RomFS Extractor : SciresM
3DS Builder : SciresM
Decrypt9 : Archshift
Decrypt9 (3DSX and python scripts) : d0k3 & Shadowtrance
3DSFAT16Tool : d0k3
Brahma2 : delebile
3DS Simple CIA Converter : Riku
Patch RomFS Pointer Tool : AHP_Person
HackingToolkit3DS : Asia81 / Mizoré
CleanTool : Asia81 / Mizoré

Thanks to:
Megadrifter
Stratovarius
Reisyukaku
Weby
Guitoh
Apache Thunder
Ericzander
BullyWiiPlaza​

 

[froggestspirit]

This should work for unpacking and repacking other updates, right?

 

[Asia81]

For other games ?
No, it's not the same thing to do

 

[KazoWAR]

ill give it a shot. but i was rebuilding the cias pretty much the same way(from the spoofed 1.2 update source)

*EDIT 1*Still same thing, if i leave romfs alone, it works, but if i touch romfs(even repacking untouched files) it broken, this is with the v1.5 update BTW, let me test with v1.2

*EDIT 2* v1.2 not working either. what the fuck.

*EDIT 3* Turns out I was using an old version of RomFS Builder

 

[DJPlayer]

I used you PackHack so I wrote it in this thread

Not sure but could your RomFS-extractor have Problems with japanese filenames?
I'm not sure if the FIlenames should be really like "#0.bch.lz" and some foldernames like: #######_###

I decrypted and extracted Fire Emblem If and want to rebuilt it.
But the filesize of the rebuilt romfs.bin is ~ 85MB smaller?

Not sure if the RomFS extractor extracted all files correctly.
here's a example of some foldernames:

Spoiler

 

[Asia81]

ill give it a shot. but i was rebuilding the cias pretty much the same way(from the spoofed 1.2 update source)

*EDIT 1*Still same thing, if i leave romfs alone, it works, but if i touch romfs(even repacking untouched files) it broken, this is with the v1.5 update BTW, let me test with v1.2

*EDIT 2* v1.2 not working either. what the fuck.

*EDIT 3* Turns out I was using an old version of RomFS Builder

If you want, i can make a tutorial vidéo ?

--------------------- MERGED ---------------------------

I used you PackHack so I wrote it in this thread

Not sure but could your RomFS-extractor have Problems with japanese filenames?
I'm not sure if the FIlenames should be really like "#0.bch.lz" and some foldernames like: #######_###

I decrypted and extracted Fire Emblem If and want to rebuilt it.
But the filesize of the rebuilt romfs.bin is ~ 85MB smaller?

Not sure if the RomFS extractor extracted all files correctly.
here's a example of some foldernames:

Spoiler

RomFS Extractor is from SciresM, not me.

Use my batch > partition > romfs

 

[DJPlayer]

If you want, i can make a tutorial vidéo ?

--------------------- MERGED ---------------------------



RomFS Extractor is from SciresM, not me.

Use my batch > partition > romfs

I used your batch...
I wrote my own DUmp-TOol. That worked fine

 

[Asia81]

It seems working fine.
Maybe your OS does not allow japanese character.

What's your game ?

 

[DJPlayer]

It seems working fine.
Maybe your OS does not allow japanese character.

What's your game ?

I'm using Windows 8.1 Ultimate (Japanese & Chinese Fonts installed)
Decrypted and extracted Fire Emblem If

 

[KazoWAR]

If you want, i can make a tutorial vidéo ?

--------------------- MERGED ---------------------------



RomFS Extractor is from SciresM, not me.

Use my batch > partition > romfs

i got it working, i was using a older version of romfs builder and it was making bad romfs.

 

[Asia81]

i got it working, i was using a older version of romfs builder and it was making bad romfs.

Working for you ? Nice

 

[Stoned]

2 Quick Question.
I have Changed my Box Layouts whit Ohana3ds.
I Have Saved the new Layouts and repack the Garc file.

1. Question must i delete the .garc or not? Example 123.garc to 123?
2. When i Link the Boxlayouts to the Patch Exampe Folder a1 Folder 0 and 3.garc than build the romfs and the Patch i become a Blackscreen when i Enter the Pc
What can i Do?

@Edit: Works.
My Problem was i have the garc extracted whit ohana and Repacked whit Garctool.

 

[Asia81]

@Stoned

1) Yeah. Delete the .garc. Test.garc become Test (For example).
So your 3.garc should be 3. (a/1/0/3 ?)

2) With Patch RomFS Pointer Tool.exe, have you target 1 0 3 ? :
http://image.noelshack.com/fichiers/2015/26/1435482527-patchbuilder1.png

And put your garc like here: ?
http://image.noelshack.com/fichiers/2015/26/1435482877-patchbuilder2.png

Now you need to rebuild the update romfs.
Then take the romfs.bin, code.bin, icon.bin, DecryptedExHeader.bin (rename it exheader.bin) (all from the update)
And puts these files in the AS folder (or OR). and use my batch > as / or and wait.

 

[Stoned]

Yes i Have.
Or can i this not use whit cfw?
I Have no Gateway. I Have Only Cfw (Rxtools)

 

[Stoned]

New Problem.
When i Put the 0/0/8 to a0/0/8 and Point whit the pointer Tool, it´s doesnt work Ingame.
By rebuild the update become i a Message whit not cxikey found or so
What make i Wrong?

 

[Stoned]

What am I doing wrong ?

I try to Inject the Overworld data romfs a0 2 1 (buildet to romfs.bin

 

[Asia81]

What am I doing wrong ?

I try to Inject the Overworld data romfs a0 2 1 (buildet to romfs.bin

These two messages are quite normal, you can ignore them

 

[Stoned]

Okay. The Models Doesnt show up.

Or must i Start a new Game?

 

[Asia81]

what's your garc ?

 

[Stoned]

0/2/1 22Mb