ROM Hack [Help] Having some troubles with edited update CIAs

[ultramario1998]

Okay, hear me out.

I'm currently working on a (very early) fan translation project of the awesome but creepy rhythm game Daigasso! Band Brothers P. (If you're interested, you can follow our progress here.)

I'm currently attempting to mess with the game's update. A big part of this game is its online functionality, which depends on the update being installed on the system. Problem is, when I go to install my update which has my custom files, BBM thinks it's an 'Application' instead of an update, and throws a 'Program already exists' error when I go to install. The game itself works fine with the same modifications applied.

Wat do? I've tried merging the update's romfs on top of the game's romfs and installing, which just results in a title screen crash. I'm unsure of where to go from here, and I'd appreciate your help.

(If I'm unclear, I'm sorry. It's been a long week.)

My cia rebuilding process is as follows

Spoiler

Edit files within an extracted romfs folder to my liking
When I'm done, use 3DSB within asia81's hack pack to compress everything into a .3ds
Use Simple CIA Converter on that .3ds, and install

 

[Koko-Kun]

Okay, hear me out.

I'm currently working on a (very early) fan translation project of the awesome but creepy rhythm game Daigasso! Band Brothers P. (If you're interested, you can follow our progress here.)

I'm currently attempting to mess with the game's update. A big part of this game is its online functionality, which depends on the update being installed on the system. Problem is, when I go to install my update which has my custom files, BBM thinks it's an 'Application' instead of an update, and throws a 'Program already exists' error when I go to install. The game itself works fine with the same modifications applied.

Wat do? I've tried merging the update's romfs on top of the game's romfs and installing, which just results in a title screen crash. I'm unsure of where to go from here, and I'd appreciate your help.

(If I'm unclear, I'm sorry. It's been a long week.)

My cia rebuilding process is as follows

Spoiler

Edit files within an extracted romfs folder to my liking
When I'm done, use 3DSB within asia81's hack pack to compress everything into a .3ds
Use Simple CIA Converter on that .3ds, and install

How did you rebuild your update? You need to rebuild with the rsf having Category as "Patch"

 

[ultramario1998]

How did you rebuild your update? You need to rebuild the rsf with the category as "Patch"

How do I do that? All of the tools I'm using don't have that option

 

[Koko-Kun]

How do I do that? All of the tools I'm using don't have that option

https://gbatemp.net/threads/tutorial-fw-spoofing-game-updates.407689/ Follow this guide, but ignore Step 3. Shouldn't be that hard. You must be using the game's update as a base or else it won't work.

 

[Asia81]

3DS Builder break patch (since patch can't be .3ds files)

Extract your CIA (CIAE)
Edit your fles
Rebuild the update (CIAR)

No need to play with rsf files.
Don't forget you can't build an update from nothing, you need to use 1 as a base (so if the game has an updae, you need to use it as a base).

 

[ultramario1998]

3DS Builder break patch (since patch can't be .3ds files)

Extract your CIA (CIAE)
Edit your fles
Rebuild the update (CIAR)

No need to play with rsf files.
Don't forget you can't build an update from nothing, you need to use 1 as a base (so if the game has an updae, you need to use it as a base).

Thanks, that's exactly what I needed.