ROM Hack What do i do with this folder?

[Solemn]

I've been downloading .CIA files and .3ds files for quite a while but i've never come across this sort of thing.

It's a folder named "000400000f700900", and it contains 3 files, one named "00000006" , another named "00000007" and the last one "tmd".

Anybody know what i'm supposed to do with it?

 

[Kwyjor]

Can you be more specific? Where exactly did you find this folder? Did you find it in a download, or randomly on your flashcart, or what?

I might consider the possibility that you accidentally dragged it out of your Nintendo 3DS folder, but in that case I would expect a folder named 00040000 with a subfolder of 0F700900.

https://hax0kartik.github.io/3dsdb/ says 000400000f700900 is the TitleID for Binding of Isaac.

 

[Solemn]

Yeah, sorry. It was a download, that's the game i expected to be in the folder but instead i got all of this.

What i'm trying to do is somehow make that a .CIA file, or a .3DS file that i can then convert to .CIA

 

[Kwyjor]

I would suggest simply looking for another download. (Or of course, y'know, buying the game.)

 

[Solemn]

But is there a way to convert it? i'm kinda curious about this.

 

[Ryccardo]

As you may know, a (non-dsiware) cia is made of 1 or more contents (the numbered files), a tmd, a ticket, and of an optional preview section; and those files look like direct downloads from the CDN (which can be turned into a cia if you have (or can generate) an appropriate matching ticket, but I don't really know how - maybe the source code of FunkeyCia will help you understand the process, since it pretty much did exactly that)

 

[Solemn]

As you may know, a (non-dsiware) cia is made of 1 or more contents (the numbered files), a tmd, a ticket, and of an optional preview section; and those files look like direct downloads from the CDN (which can be turned into a cia if you have (or can generate) an appropriate matching ticket, but I don't really know how - maybe the source code of FunkeyCia will help you understand the process, since it pretty much did exactly that)

I did suspect that it was just an uncompiled .CIA.

So if i could skip the download part of the script, maybe i could make due with what i've got. I'm only missing this ticket, which his program seemed to also get from the encTitleKeys.bin file.

But what i'm wondering is why was the file left like this? it's not like this is the only file of it's kind either, there are several others in the same style; 2 files and a tmd. If somebody went out of their way to upload files at this state, then there's got to be a way to make them work, somehow.

I got the game from somewhere else, but this just really intrigued me.

 

[Ryccardo]

If somebody went out of their way to upload files at this state, then there's got to be a way to make them work, somehow.

Since it's the format they are stored on Nintendo servers, you could - if you really wanted to - run your own webserver then use custom DNS or hosts list to point your computer (or maybe console running an homebrew cdn downloader that's not freeshop) to it - and of course they are the intermediate format for the CDN-to-CIA downloaders...

There are often multiple valid formats, all with their different merits - where someone (like me) may prefer fully decrypted cias (since they're the easiest to run, therefore maximizing preservation of the actual software), there's also some merit of people who prefer untrimmed ccis (who are then interested in preservation of the roms themselves), though I don't think I've heard of people really using the directly downloaded format until now...